123551064231 has 48 divisors (see below), whose sum is σ = 199198869504. Its totient is φ = 66656160000.

The previous prime is 123551064199. The next prime is 123551064347. The reversal of 123551064231 is 132460155321.

It is not a de Polignac number, because 123551064231 - 2⁵ = 123551064199 is a prime.

It is a super-2 number, since 2×123551064231² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 123551064192 and 123551064201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123551064731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1037881 + ... + 1150781.

It is an arithmetic number, because the mean of its divisors is an integer number (4149976448).

Almost surely, 2^123551064231 is an apocalyptic number.

123551064231 is a deficient number, since it is larger than the sum of its proper divisors (75647805273).

123551064231 is a wasteful number, since it uses less digits than its factorization.

123551064231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113024 (or 112983 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 123551064231 in words is "one hundred twenty-three billion, five hundred fifty-one million, sixty-four thousand, two hundred thirty-one".