31597880323 has 2 divisors, whose sum is σ = 31597880324. Its totient is φ = 31597880322.

The previous prime is 31597880243. The next prime is 31597880333. The reversal of 31597880323 is 32308879513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31597880323 is a prime.

It is not a weakly prime, because it can be changed into another prime (31597880333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15798940161 + 15798940162.

It is an arithmetic number, because the mean of its divisors is an integer number (15798940162).

Almost surely, 2^31597880323 is an apocalyptic number.

31597880323 is a deficient number, since it is larger than the sum of its proper divisors (1).

31597880323 is an equidigital number, since it uses as much as digits as its factorization.

31597880323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 31597880323 in words is "thirty-one billion, five hundred ninety-seven million, eight hundred eighty thousand, three hundred twenty-three".