231023551016 has 64 divisors (see below), whose sum is σ = 483225134400. Its totient is φ = 102902012928.

The previous prime is 231023551007. The next prime is 231023551027. The reversal of 231023551016 is 610155320132.

It is a super-2 number, since 2×231023551016² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231023551016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2862026 + ... + 2941638.

It is an arithmetic number, because the mean of its divisors is an integer number (7550392725).

Almost surely, 2^231023551016 is an apocalyptic number.

It is an amenable number.

231023551016 is an abundant number, since it is smaller than the sum of its proper divisors (252201583384).

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

231023551016 is a wasteful number, since it uses less digits than its factorization.

231023551016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80778 (or 80774 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 231023551016 its reverse (610155320132), we get a palindrome (841178871148).

The spelling of 231023551016 in words is "two hundred thirty-one billion, twenty-three million, five hundred fifty-one thousand, sixteen".