3131323204 has 6 divisors (see below), whose sum is σ = 5479815614. Its totient is φ = 1565661600.

The previous prime is 3131323193. The next prime is 3131323207. The reversal of 3131323204 is 4023231313.

It can be written as a sum of positive squares in only one way, i.e., 3073593600 + 57729604 = 55440^2 + 7598^2 .

It is a super-3 number, since 3×3131323204³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3131323207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391415397 + ... + 391415404.

Almost surely, 2^3131323204 is an apocalyptic number.

It is an amenable number.

3131323204 is a deficient number, since it is larger than the sum of its proper divisors (2348492410).

3131323204 is a wasteful number, since it uses less digits than its factorization.

3131323204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782830805 (or 782830803 counting only the distinct ones).

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

The square root of 3131323204 is about 55958.2273128805. The cubic root of 3131323204 is about 1462.9942933293.

Adding to 3131323204 its reverse (4023231313), we get a palindrome (7154554517).

The spelling of 3131323204 in words is "three billion, one hundred thirty-one million, three hundred twenty-three thousand, two hundred four".