31312100203012 has 24 divisors (see below), whose sum is σ = 58021133859360. Its totient is φ = 14734685896320.

The previous prime is 31312100202991. The next prime is 31312100203031. The reversal of 31312100203012 is 21030200121313.

It is a super-2 number, since 2×31312100203012² (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 7 ways as a sum of consecutive naturals, for example, 4154562 + ... + 8937817.

It is an arithmetic number, because the mean of its divisors is an integer number (2417547244140).

Almost surely, 2^{31312100203012} is an apocalyptic number.

It is an amenable number.

31312100203012 is a deficient number, since it is larger than the sum of its proper divisors (26709033656348).

31312100203012 is a wasteful number, since it uses less digits than its factorization.

31312100203012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13127571 (or 13127569 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31312100203012 its reverse (21030200121313), we get a palindrome (52342300324325).

The spelling of 31312100203012 in words is "thirty-one trillion, three hundred twelve billion, one hundred million, two hundred three thousand, twelve".