3131249397 has 24 divisors (see below), whose sum is σ = 4462443936. Its totient is φ = 1952563968.

The previous prime is 3131249383. The next prime is 3131249423. The reversal of 3131249397 is 7939421313.

It is not a de Polignac number, because 3131249397 - 2⁷ = 3131249269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131249197) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 130243 + ... + 152399.

It is an arithmetic number, because the mean of its divisors is an integer number (185935164).

Almost surely, 2^3131249397 is an apocalyptic number.

It is an amenable number.

3131249397 is a deficient number, since it is larger than the sum of its proper divisors (1331194539).

3131249397 is a wasteful number, since it uses less digits than its factorization.

3131249397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22357 (or 22340 counting only the distinct ones).

The product of its digits is 122472, while the sum is 42.

The square root of 3131249397 is about 55957.5678259876. The cubic root of 3131249397 is about 1462.9827987139.

The spelling of 3131249397 in words is "three billion, one hundred thirty-one million, two hundred forty-nine thousand, three hundred ninety-seven".