31028683012 has 6 divisors (see below), whose sum is σ = 54300195278. Its totient is φ = 15514341504.

The previous prime is 31028683009. The next prime is 31028683057. The reversal of 31028683012 is 21038682013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26181181636 + 4847501376 = 161806^2 + 69624^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3878585373 + ... + 3878585380.

Almost surely, 2^31028683012 is an apocalyptic number.

It is an amenable number.

31028683012 is a deficient number, since it is larger than the sum of its proper divisors (23271512266).

31028683012 is a wasteful number, since it uses less digits than its factorization.

31028683012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7757170757 (or 7757170755 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

Subtracting from 31028683012 its reverse (21038682013), we obtain a palindrome (9990000999).

The spelling of 31028683012 in words is "thirty-one billion, twenty-eight million, six hundred eighty-three thousand, twelve".