231144424012 has 12 divisors (see below), whose sum is σ = 407590550136. Its totient is φ = 114689981120.

The previous prime is 231144423997. The next prime is 231144424081. The reversal of 231144424012 is 210424441132.

It is a super-2 number, since 2×231144424012² (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 3 ways as a sum of consecutive naturals, for example, 220557133 + ... + 220558180.

It is an arithmetic number, because the mean of its divisors is an integer number (33965879178).

Almost surely, 2^231144424012 is an apocalyptic number.

It is an amenable number.

231144424012 is a deficient number, since it is larger than the sum of its proper divisors (176446126124).

231144424012 is a wasteful number, since it uses less digits than its factorization.

231144424012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441115448 (or 441115446 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 231144424012 its reverse (210424441132), we get a palindrome (441568865144).

The spelling of 231144424012 in words is "two hundred thirty-one billion, one hundred forty-four million, four hundred twenty-four thousand, twelve".