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30231231000 = 23353311731879
BaseRepresentation
bin11100001001111010…
…111111101000011000
32220000212101122200020
4130021322333220120
5443403143343000
621515452110440
72120105136465
oct341172775030
986025348606
1030231231000
1111903818333
125a38465420
132b0a265789
14166b03a66c
15bbe0a1ba0
hex709ebfa18

30231231000 has 256 divisors, whose sum is σ = 97978982400. Its totient is φ = 7752384000.

The previous prime is 30231230971. The next prime is 30231231049. The reversal of 30231231000 is 13213203.

It is a super-2 number, since 2×302312310002 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16088061 + ... + 16089939.

It is an arithmetic number, because the mean of its divisors is an integer number (382730400).

Almost surely, 230231231000 is an apocalyptic number.

30231231000 is a gapful number since it is divisible by the number (30) 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 30231231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48989491200).

30231231000 is an abundant number, since it is smaller than the sum of its proper divisors (67747751400).

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

30231231000 is a wasteful number, since it uses less digits than its factorization.

30231231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 30231231000 its reverse (13213203), we get a palindrome (30244444203).

The spelling of 30231231000 in words is "thirty billion, two hundred thirty-one million, two hundred thirty-one thousand".