31023002212 has 6 divisors (see below), whose sum is σ = 54290253878. Its totient is φ = 15511501104.

The previous prime is 31023002207. The next prime is 31023002237. The reversal of 31023002212 is 21220032013.

It can be written as a sum of positive squares in only one way, i.e., 30301757476 + 721244736 = 174074^2 + 26856^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3877875273 + ... + 3877875280.

Almost surely, 2^31023002212 is an apocalyptic number.

It is an amenable number.

31023002212 is a deficient number, since it is larger than the sum of its proper divisors (23267251666).

31023002212 is a wasteful number, since it uses less digits than its factorization.

31023002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755750557 (or 7755750555 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31023002212 its reverse (21220032013), we get a palindrome (52243034225).

The spelling of 31023002212 in words is "thirty-one billion, twenty-three million, two thousand, two hundred twelve".