31925697243 has 16 divisors (see below), whose sum is σ = 46445396736. Its totient is φ = 19345566240.

The previous prime is 31925697229. The next prime is 31925697253. The reversal of 31925697243 is 34279652913.

It is not a de Polignac number, because 31925697243 - 2²⁰ = 31924648667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31925697253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117705 + ... + 278757.

It is an arithmetic number, because the mean of its divisors is an integer number (2902837296).

Almost surely, 2^31925697243 is an apocalyptic number.

31925697243 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31925697243 is a deficient number, since it is larger than the sum of its proper divisors (14519699493).

31925697243 is a wasteful number, since it uses less digits than its factorization.

31925697243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167074.

The product of its digits is 2449440, while the sum is 51.

The spelling of 31925697243 in words is "thirty-one billion, nine hundred twenty-five million, six hundred ninety-seven thousand, two hundred forty-three".