31125343497 has 16 divisors (see below), whose sum is σ = 42536508672. Its totient is φ = 20235392640.

The previous prime is 31125343489. The next prime is 31125343499. The reversal of 31125343497 is 79434352113.

It is not a de Polignac number, because 31125343497 - 2³ = 31125343489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31125343499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359404 + ... + 437517.

It is an arithmetic number, because the mean of its divisors is an integer number (2658531792).

Almost surely, 2^31125343497 is an apocalyptic number.

It is an amenable number.

31125343497 is a deficient number, since it is larger than the sum of its proper divisors (11411165175).

31125343497 is a wasteful number, since it uses less digits than its factorization.

31125343497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797248.

The product of its digits is 272160, while the sum is 42.

The spelling of 31125343497 in words is "thirty-one billion, one hundred twenty-five million, three hundred forty-three thousand, four hundred ninety-seven".