31347750436 has 96 divisors (see below), whose sum is σ = 59311042560. Its totient is φ = 14469840000.

The previous prime is 31347750391. The next prime is 31347750443. The reversal of 31347750436 is 63405774313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 31347750392 and 31347750401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78961390 + ... + 78961786.

It is an arithmetic number, because the mean of its divisors is an integer number (617823360).

Almost surely, 2^31347750436 is an apocalyptic number.

It is an amenable number.

31347750436 is a deficient number, since it is larger than the sum of its proper divisors (27963292124).

31347750436 is a wasteful number, since it uses less digits than its factorization.

31347750436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 43.

The spelling of 31347750436 in words is "thirty-one billion, three hundred forty-seven million, seven hundred fifty thousand, four hundred thirty-six".