3131357044 has 6 divisors (see below), whose sum is σ = 5479874834. Its totient is φ = 1565678520.

The previous prime is 3131357039. The next prime is 3131357063. The reversal of 3131357044 is 4407531313.

It can be written as a sum of positive squares in only one way, i.e., 3048364944 + 82992100 = 55212^2 + 9110^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3131356997 and 3131357015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391419627 + ... + 391419634.

Almost surely, 2^3131357044 is an apocalyptic number.

It is an amenable number.

3131357044 is a deficient number, since it is larger than the sum of its proper divisors (2348517790).

3131357044 is a wasteful number, since it uses less digits than its factorization.

3131357044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782839265 (or 782839263 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 3131357044 is about 55958.5296804696. The cubic root of 3131357044 is about 1462.9995634708. Note that the first 3 decimals are identical.

Adding to 3131357044 its reverse (4407531313), we get a palindrome (7538888357).

The spelling of 3131357044 in words is "three billion, one hundred thirty-one million, three hundred fifty-seven thousand, forty-four".