31347574238 has 4 divisors (see below), whose sum is σ = 47021361360. Its totient is φ = 15673787118.

The previous prime is 31347574217. The next prime is 31347574249. The reversal of 31347574238 is 83247574313.

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

It is a junction number, because it is equal to n+sod(n) for n = 31347574192 and 31347574201.

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, 7836893558 + ... + 7836893561.

It is an arithmetic number, because the mean of its divisors is an integer number (11755340340).

Almost surely, 2^31347574238 is an apocalyptic number.

31347574238 is a deficient number, since it is larger than the sum of its proper divisors (15673787122).

31347574238 is a wasteful number, since it uses less digits than its factorization.

31347574238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15673787121.

The product of its digits is 1693440, while the sum is 47.

The spelling of 31347574238 in words is "thirty-one billion, three hundred forty-seven million, five hundred seventy-four thousand, two hundred thirty-eight".