31593902969 has 2 divisors, whose sum is σ = 31593902970. Its totient is φ = 31593902968.

The previous prime is 31593902957. The next prime is 31593903031. The reversal of 31593902969 is 96920939513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26440386025 + 5153516944 = 162605^2 + 71788^2 .

It is an emirp because it is prime and its reverse (96920939513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31593902969 - 2¹⁶ = 31593837433 is a prime.

It is a super-2 number, since 2×31593902969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31593952969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15796951484 + 15796951485.

It is an arithmetic number, because the mean of its divisors is an integer number (15796951485).

Almost surely, 2^31593902969 is an apocalyptic number.

It is an amenable number.

31593902969 is a deficient number, since it is larger than the sum of its proper divisors (1).

31593902969 is an equidigital number, since it uses as much as digits as its factorization.

31593902969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3542940, while the sum is 56.

The spelling of 31593902969 in words is "thirty-one billion, five hundred ninety-three million, nine hundred two thousand, nine hundred sixty-nine".