3131256256 has 28 divisors (see below), whose sum is σ = 6306335368. Its totient is φ = 1542258432.

The previous prime is 3131256253. The next prime is 3131256263. The reversal of 3131256256 is 6526521313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131256251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360831 + ... + 369406.

Almost surely, 2^3131256256 is an apocalyptic number.

It is an amenable number.

3131256256 is an abundant number, since it is smaller than the sum of its proper divisors (3175079112).

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

3131256256 is an equidigital number, since it uses as much as digits as its factorization.

3131256256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730316 (or 730306 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 3131256256 is about 55957.6291134641. The cubic root of 3131256256 is about 1462.9838669341.

Adding to 3131256256 its reverse (6526521313), we get a palindrome (9657777569).

The spelling of 3131256256 in words is "three billion, one hundred thirty-one million, two hundred fifty-six thousand, two hundred fifty-six".