31084022042 has 4 divisors (see below), whose sum is σ = 46626033066. Its totient is φ = 15542011020.

The previous prime is 31084022023. The next prime is 31084022063. The reversal of 31084022042 is 24022048013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24022048013 = 12791 ⋅1878043.

It can be written as a sum of positive squares in only one way, i.e., 19318498081 + 11765523961 = 138991^2 + 108469^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7771005509 + ... + 7771005512.

Almost surely, 2^31084022042 is an apocalyptic number.

31084022042 is a deficient number, since it is larger than the sum of its proper divisors (15542011024).

31084022042 is a wasteful number, since it uses less digits than its factorization.

31084022042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15542011023.

The product of its (nonzero) digits is 3072, while the sum is 26.

The spelling of 31084022042 in words is "thirty-one billion, eighty-four million, twenty-two thousand, forty-two".