31374664894 has 4 divisors (see below), whose sum is σ = 47061997344. Its totient is φ = 15687332446.

The previous prime is 31374664861. The next prime is 31374664921. The reversal of 31374664894 is 49846647313.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7843666222 + ... + 7843666225.

It is an arithmetic number, because the mean of its divisors is an integer number (11765499336).

Almost surely, 2^31374664894 is an apocalyptic number.

31374664894 is a deficient number, since it is larger than the sum of its proper divisors (15687332450).

31374664894 is a wasteful number, since it uses less digits than its factorization.

31374664894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15687332449.

The product of its digits is 10450944, while the sum is 55.

The spelling of 31374664894 in words is "thirty-one billion, three hundred seventy-four million, six hundred sixty-four thousand, eight hundred ninety-four".