31231111002212 has 12 divisors (see below), whose sum is σ = 59623030095216. Its totient is φ = 14195959546440.

The previous prime is 31231111002187. The next prime is 31231111002233. The reversal of 31231111002212 is 21220011113213.

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, 354898988618 + ... + 354898988705.

It is an arithmetic number, because the mean of its divisors is an integer number (4968585841268).

Almost surely, 2^{31231111002212} is an apocalyptic number.

It is an amenable number.

31231111002212 is a deficient number, since it is larger than the sum of its proper divisors (28391919093004).

31231111002212 is a wasteful number, since it uses less digits than its factorization.

31231111002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709797977338 (or 709797977336 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31231111002212 its reverse (21220011113213), we get a palindrome (52451122115425).

The spelling of 31231111002212 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred eleven million, two thousand, two hundred twelve".