3131551312 has 20 divisors (see below), whose sum is σ = 6276601620. Its totient is φ = 1511783168.

The previous prime is 3131551307. The next prime is 3131551373. The reversal of 3131551312 is 2131551313.

It can be written as a sum of positive squares in 2 ways, for example, as 2641548816 + 490002496 = 51396^2 + 22136^2 .

It is a super-2 number, since 2×3131551312² = 19613227239377842688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3374053 + ... + 3374980.

It is an arithmetic number, because the mean of its divisors is an integer number (313830081).

Almost surely, 2^3131551312 is an apocalyptic number.

It is an amenable number.

3131551312 is an abundant number, since it is smaller than the sum of its proper divisors (3145050308).

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

3131551312 is a wasteful number, since it uses less digits than its factorization.

3131551312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6749070 (or 6749064 counting only the distinct ones).

The product of its digits is 1350, while the sum is 25.

The square root of 3131551312 is about 55960.2654747098. The cubic root of 3131551312 is about 1463.0298174595.

Subtracting from 3131551312 its reverse (2131551313), we obtain a palindrome (999999999).

The spelling of 3131551312 in words is "three billion, one hundred thirty-one million, five hundred fifty-one thousand, three hundred twelve".