31347386344 has 8 divisors (see below), whose sum is σ = 58776349410. Its totient is φ = 15673693168.

The previous prime is 31347386327. The next prime is 31347386393. The reversal of 31347386344 is 44368374313.

It can be written as a sum of positive squares in only one way, i.e., 30463513444 + 883872900 = 174538^2 + 29730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 31347386294 and 31347386303.

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, 1959211639 + ... + 1959211654.

Almost surely, 2^31347386344 is an apocalyptic number.

It is an amenable number.

31347386344 is a deficient number, since it is larger than the sum of its proper divisors (27428963066).

31347386344 is a wasteful number, since it uses less digits than its factorization.

31347386344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918423299 (or 3918423295 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 46.

The spelling of 31347386344 in words is "thirty-one billion, three hundred forty-seven million, three hundred eighty-six thousand, three hundred forty-four".