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210232221231 = 31929127182227
BaseRepresentation
bin1100001111001011010…
…0010001111000101111
3202002122110000101021010
43003302310101320233
511421023422034411
6240325050040303
721121515252534
oct3036264217057
9662573011233
10210232221231
118118267648a
12348b2419093
1316a95165956
14a265012d8b
1557069037a6
hex30f2d11e2f

210232221231 has 16 divisors (see below), whose sum is σ = 305237347200. Its totient is φ = 128199683808.

The previous prime is 210232221229. The next prime is 210232221317. The reversal of 210232221231 is 132122232012.

It is not a de Polignac number, because 210232221231 - 21 = 210232221229 is a prime.

It is a super-2 number, since 2×2102322212312 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210232221198 and 210232221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210232021231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63589461 + ... + 63592766.

It is an arithmetic number, because the mean of its divisors is an integer number (19077334200).

Almost surely, 2210232221231 is an apocalyptic number.

210232221231 is a deficient number, since it is larger than the sum of its proper divisors (95005125969).

210232221231 is a wasteful number, since it uses less digits than its factorization.

210232221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127182278.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 210232221231 its reverse (132122232012), we get a palindrome (342354453243).

The spelling of 210232221231 in words is "two hundred ten billion, two hundred thirty-two million, two hundred twenty-one thousand, two hundred thirty-one".

Divisors: 1 3 19 29 57 87 551 1653 127182227 381546681 2416462313 3688284583 7249386939 11064853749 70077407077 210232221231