31347780674 has 12 divisors (see below), whose sum is σ = 54698678694. Its totient is φ = 13434763104.

The previous prime is 31347780643. The next prime is 31347780677. The reversal of 31347780674 is 47608774313.

It can be written as a sum of positive squares in only one way, i.e., 17228400049 + 14119380625 = 131257^2 + 118825^2 .

It is not an unprimeable number, because it can be changed into a prime (31347780677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159937559 + ... + 159937754.

Almost surely, 2^31347780674 is an apocalyptic number.

31347780674 is a deficient number, since it is larger than the sum of its proper divisors (23350898020).

31347780674 is a wasteful number, since it uses less digits than its factorization.

31347780674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319875329 (or 319875322 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 50.

The spelling of 31347780674 in words is "thirty-one billion, three hundred forty-seven million, seven hundred eighty thousand, six hundred seventy-four".