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210231000000000 = 29325974771
BaseRepresentation
bin101111110011010000111000…
…000100110110011000000000
31000120100212221212010011101100
4233303100320010312120000
5210023411042000000000
62023042442122134400
762165455106405640
oct5763207004663000
91016325855104340
10210231000000000
1160a93514875381
121b6b4214651400
13903c910038825
1439cb33ddca520
1519488cdc61a00
hexbf3438136600

210231000000000 has 2400 divisors, whose sum is σ = 897682408077312. Its totient is φ = 46368000000000.

The previous prime is 210230999999963. The next prime is 210231000000037. The reversal of 210231000000000 is 132012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (210230999999963) and next prime (210231000000037).

It is a tau number, because it is divible by the number of its divisors (2400).

It is a super-2 number, since 2×2102310000000002 (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 2960999999965 + ... + 2961000000035.

Almost surely, 2210231000000000 is an apocalyptic number.

210231000000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210231000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448841204038656).

210231000000000 is an abundant number, since it is smaller than the sum of its proper divisors (687451408077312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210231000000000 is an frugal number, since it uses more digits than its factorization.

210231000000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 210231000000000 its reverse (132012), we get a palindrome (210231000132012).

The spelling of 210231000000000 in words is "two hundred ten trillion, two hundred thirty-one billion", and thus it is an aban number.