3131268120 has 48 divisors (see below), whose sum is σ = 10176622560. Its totient is φ = 835004736.

The previous prime is 3131268089. The next prime is 3131268121. The reversal of 3131268120 is 218621313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131268121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4348624 + ... + 4349343.

It is an arithmetic number, because the mean of its divisors is an integer number (212012970).

Almost surely, 2^3131268120 is an apocalyptic number.

3131268120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3131268120 is an abundant number, since it is smaller than the sum of its proper divisors (7045354440).

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

3131268120 is a wasteful number, since it uses less digits than its factorization.

3131268120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8697984 (or 8697977 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 3131268120 is about 55957.7351221437. The cubic root of 3131268120 is about 1462.9857146290.

Adding to 3131268120 its reverse (218621313), we get a palindrome (3349889433).

The spelling of 3131268120 in words is "three billion, one hundred thirty-one million, two hundred sixty-eight thousand, one hundred twenty".