31304131304 has 8 divisors (see below), whose sum is σ = 58695246210. Its totient is φ = 15652065648.

The previous prime is 31304131289. The next prime is 31304131307. The reversal of 31304131304 is 40313140313.

It can be written as a sum of positive squares in only one way, i.e., 19574808100 + 11729323204 = 139910^2 + 108302^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 31304131304.

It is not an unprimeable number, because it can be changed into a prime (31304131307) by changing a digit.

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, 1956508199 + ... + 1956508214.

Almost surely, 2^31304131304 is an apocalyptic number.

It is an amenable number.

31304131304 is a deficient number, since it is larger than the sum of its proper divisors (27391114906).

31304131304 is a wasteful number, since it uses less digits than its factorization.

31304131304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913016419 (or 3913016415 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31304131304 its reverse (40313140313), we get a palindrome (71617271617).

Subtracting 31304131304 from its reverse (40313140313), we obtain a palindrome (9009009009).

The spelling of 31304131304 in words is "thirty-one billion, three hundred four million, one hundred thirty-one thousand, three hundred four".