31030031212 has 6 divisors (see below), whose sum is σ = 54302554628. Its totient is φ = 15515015604.

The previous prime is 31030031191. The next prime is 31030031231. The reversal of 31030031212 is 21213003013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3878753898 + ... + 3878753905.

Almost surely, 2^31030031212 is an apocalyptic number.

It is an amenable number.

31030031212 is a deficient number, since it is larger than the sum of its proper divisors (23272523416).

31030031212 is a wasteful number, since it uses less digits than its factorization.

31030031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7757507807 (or 7757507805 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31030031212 its reverse (21213003013), we get a palindrome (52243034225).

The spelling of 31030031212 in words is "thirty-one billion, thirty million, thirty-one thousand, two hundred twelve".