31232210213012 has 6 divisors (see below), whose sum is σ = 54656367872778. Its totient is φ = 15616105106504.

The previous prime is 31232210212981. The next prime is 31232210213027. The reversal of 31232210213012 is 21031201223213.

It can be written as a sum of positive squares in only one way, i.e., 30828990292996 + 403219920016 = 5552386^2 + 634996^2 .

It is a super-2 number, since 2×31232210213012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3904026276623 + ... + 3904026276630.

It is an arithmetic number, because the mean of its divisors is an integer number (9109394645463).

Almost surely, 2^{31232210213012} is an apocalyptic number.

It is an amenable number.

31232210213012 is a deficient number, since it is larger than the sum of its proper divisors (23424157659766).

31232210213012 is a wasteful number, since it uses less digits than its factorization.

31232210213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808052553257 (or 7808052553255 counting only the distinct ones).

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

Adding to 31232210213012 its reverse (21031201223213), we get a palindrome (52263411436225).

The spelling of 31232210213012 in words is "thirty-one trillion, two hundred thirty-two billion, two hundred ten million, two hundred thirteen thousand, twelve".