31323312004 has 24 divisors (see below), whose sum is σ = 55331591168. Its totient is φ = 15514662240.

The previous prime is 31323312001. The next prime is 31323312043. The reversal of 31323312004 is 40021332313.

It is a super-2 number, since 2×31323312004² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31323312001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 289147 + ... + 382429.

Almost surely, 2^31323312004 is an apocalyptic number.

It is an amenable number.

31323312004 is a deficient number, since it is larger than the sum of its proper divisors (24008279164).

31323312004 is a wasteful number, since it uses less digits than its factorization.

31323312004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94075 (or 94073 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31323312004 its reverse (40021332313), we get a palindrome (71344644317).

The spelling of 31323312004 in words is "thirty-one billion, three hundred twenty-three million, three hundred twelve thousand, four".