31317270508747 has 4 divisors (see below), whose sum is σ = 32081106374856. Its totient is φ = 30553434642640.

The previous prime is 31317270508639. The next prime is 31317270508793. The reversal of 31317270508747 is 74780507271313.

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

It is a cyclic number.

It is not a de Polignac number, because 31317270508747 - 2³⁹ = 30767514694859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31317270508247) 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, 381917932993 + ... + 381917933074.

It is an arithmetic number, because the mean of its divisors is an integer number (8020276593714).

Almost surely, 2^{31317270508747} is an apocalyptic number.

31317270508747 is a deficient number, since it is larger than the sum of its proper divisors (763835866109).

31317270508747 is an equidigital number, since it uses as much as digits as its factorization.

31317270508747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763835866108.

The product of its (nonzero) digits is 6914880, while the sum is 55.

The spelling of 31317270508747 in words is "thirty-one trillion, three hundred seventeen billion, two hundred seventy million, five hundred eight thousand, seven hundred forty-seven".