31313264402 has 32 divisors (see below), whose sum is σ = 55841270400. Its totient is φ = 12884796288.

The previous prime is 31313264369. The next prime is 31313264419. The reversal of 31313264402 is 20446231313.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 in 15 ways as a sum of consecutive naturals, for example, 142763 + ... + 288110.

It is an arithmetic number, because the mean of its divisors is an integer number (1745039700).

Almost surely, 2^31313264402 is an apocalyptic number.

31313264402 is a deficient number, since it is larger than the sum of its proper divisors (24528005998).

31313264402 is a wasteful number, since it uses less digits than its factorization.

31313264402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431090.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 31313264402 its reverse (20446231313), we get a palindrome (51759495715).

The spelling of 31313264402 in words is "thirty-one billion, three hundred thirteen million, two hundred sixty-four thousand, four hundred two".