31565351315423 has 12 divisors (see below), whose sum is σ = 32695463350368. Its totient is φ = 30473051380800.

The previous prime is 31565351315369. The next prime is 31565351315429. The reversal of 31565351315423 is 32451315356513.

It is not a de Polignac number, because 31565351315423 - 2⁸ = 31565351315167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31565351315429) 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, 4326515 + ... + 9047067.

It is an arithmetic number, because the mean of its divisors is an integer number (2724621945864).

Almost surely, 2^{31565351315423} is an apocalyptic number.

31565351315423 is a deficient number, since it is larger than the sum of its proper divisors (1130112034945).

31565351315423 is an equidigital number, since it uses as much as digits as its factorization.

31565351315423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4728562 (or 4728533 counting only the distinct ones).

The product of its digits is 2430000, while the sum is 47.

The spelling of 31565351315423 in words is "thirty-one trillion, five hundred sixty-five billion, three hundred fifty-one million, three hundred fifteen thousand, four hundred twenty-three".