31231102031212 has 24 divisors (see below), whose sum is σ = 54795424602800. Its totient is φ = 15575276699136.

The previous prime is 31231102031209. The next prime is 31231102031369. The reversal of 31231102031212 is 21213020113213.

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, 10923268 + ... + 13482580.

Almost surely, 2^{31231102031212} is an apocalyptic number.

It is an amenable number.

31231102031212 is a deficient number, since it is larger than the sum of its proper divisors (23564322571588).

31231102031212 is a wasteful number, since it uses less digits than its factorization.

31231102031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567185 (or 2567183 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31231102031212 its reverse (21213020113213), we get a palindrome (52444122144425).

The spelling of 31231102031212 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred two million, thirty-one thousand, two hundred twelve".