231020213132012 has 12 divisors (see below), whose sum is σ = 406201417404216. Its totient is φ = 114962665302240.

The previous prime is 231020213131997. The next prime is 231020213132017. The reversal of 231020213132012 is 210231312020132.

It is not an unprimeable number, because it can be changed into a prime (231020213132017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136860314993 + ... + 136860316680.

It is an arithmetic number, because the mean of its divisors is an integer number (33850118117018).

Almost surely, 2^{231020213132012} is an apocalyptic number.

It is an amenable number.

231020213132012 is a deficient number, since it is larger than the sum of its proper divisors (175181204272204).

231020213132012 is a wasteful number, since it uses less digits than its factorization.

231020213132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273720631888 (or 273720631886 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 231020213132012 its reverse (210231312020132), we get a palindrome (441251525152144).

The spelling of 231020213132012 in words is "two hundred thirty-one trillion, twenty billion, two hundred thirteen million, one hundred thirty-two thousand, twelve".