3131313136 has 40 divisors (see below), whose sum is σ = 7051155840. Its totient is φ = 1319242944.

The previous prime is 3131313121. The next prime is 3131313169. The reversal of 3131313136 is 6313131313.

It is a self number, because there is not a number n which added to its sum of digits gives 3131313136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230326 + ... + 243541.

It is an arithmetic number, because the mean of its divisors is an integer number (176278896).

Almost surely, 2^3131313136 is an apocalyptic number.

It is an amenable number.

3131313136 is an abundant number, since it is smaller than the sum of its proper divisors (3919842704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131313136 is a wasteful number, since it uses less digits than its factorization.

3131313136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473941 (or 473935 counting only the distinct ones).

The product of its digits is 1458, while the sum is 25.

The square root of 3131313136 is about 55958.1373528462. The cubic root of 3131313136 is about 1462.9927253615.

Adding to 3131313136 its reverse (6313131313), we get a palindrome (9444444449).

The spelling of 3131313136 in words is "three billion, one hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-six".