31321232232012 has 72 divisors (see below), whose sum is σ = 83377886592000. Its totient is φ = 9886433354208.

The previous prime is 31321232231999. The next prime is 31321232232023. The reversal of 31321232232012 is 21023223212313.

31321232232012 is a `hidden beast` number, since 3 + 1 + 3 + 2 + 1 + 2 + 322 + 320 + 12 = 666.

It is a super-2 number, since 2×31321232232012² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8864512 + ... + 11883687.

Almost surely, 2^{31321232232012} is an apocalyptic number.

It is an amenable number.

31321232232012 is an abundant number, since it is smaller than the sum of its proper divisors (52056654359988).

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

31321232232012 is a wasteful number, since it uses less digits than its factorization.

31321232232012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20750435 (or 20750430 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31321232232012 its reverse (21023223212313), we get a palindrome (52344455444325).

The spelling of 31321232232012 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred thirty-two million, two hundred thirty-two thousand, twelve".