31023021002212 has 12 divisors (see below), whose sum is σ = 54306595063980. Its totient is φ = 15506850983936.

The previous prime is 31023021002201. The next prime is 31023021002263. The reversal of 31023021002212 is 21220012032013.

It can be written as a sum of positive squares in 2 ways, for example, as 18616170105316 + 12406850896896 = 4314646^2 + 3522336^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31023021002212.

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, 1164864313 + ... + 1164890944.

It is an arithmetic number, because the mean of its divisors is an integer number (4525549588665).

Almost surely, 2^{31023021002212} is an apocalyptic number.

It is an amenable number.

31023021002212 is a deficient number, since it is larger than the sum of its proper divisors (23283574061768).

31023021002212 is a wasteful number, since it uses less digits than its factorization.

31023021002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329758590 (or 2329758588 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31023021002212 its reverse (21220012032013), we get a palindrome (52243033034225).

The spelling of 31023021002212 in words is "thirty-one trillion, twenty-three billion, twenty-one million, two thousand, two hundred twelve".