231325320012 has 24 divisors (see below), whose sum is σ = 554347164336. Its totient is φ = 75024427968.

The previous prime is 231325320001. The next prime is 231325320091. The reversal of 231325320012 is 210023523132.

It is a happy number.

It is a super-2 number, since 2×231325320012² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260501043 + ... + 260501930.

It is an arithmetic number, because the mean of its divisors is an integer number (23097798514).

Almost surely, 2^231325320012 is an apocalyptic number.

It is an amenable number.

231325320012 is an abundant number, since it is smaller than the sum of its proper divisors (323021844324).

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

231325320012 is a wasteful number, since it uses less digits than its factorization.

231325320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521003017 (or 521003015 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 231325320012 its reverse (210023523132), we get a palindrome (441348843144).

The spelling of 231325320012 in words is "two hundred thirty-one billion, three hundred twenty-five million, three hundred twenty thousand, twelve".