31312304333293 has 4 divisors (see below), whose sum is σ = 31318646713020. Its totient is φ = 31305961953568.

The previous prime is 31312304333291. The next prime is 31312304333309. The reversal of 31312304333293 is 39233340321313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16339599119529 + 14972705213764 = 4042227^2 + 3869458^2 .

It is a cyclic number.

It is not a de Polignac number, because 31312304333293 - 2¹ = 31312304333291 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 (31312304333291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3171182458 + ... + 3171192331.

It is an arithmetic number, because the mean of its divisors is an integer number (7829661678255).

Almost surely, 2^{31312304333293} is an apocalyptic number.

It is an amenable number.

31312304333293 is a deficient number, since it is larger than the sum of its proper divisors (6342379727).

31312304333293 is an equidigital number, since it uses as much as digits as its factorization.

31312304333293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342379726.

The product of its (nonzero) digits is 314928, while the sum is 40.

The spelling of 31312304333293 in words is "thirty-one trillion, three hundred twelve billion, three hundred four million, three hundred thirty-three thousand, two hundred ninety-three".