31596966073 has 4 divisors (see below), whose sum is σ = 31597834468. Its totient is φ = 31596097680.

The previous prime is 31596966053. The next prime is 31596966133. The reversal of 31596966073 is 37066969513.

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 17362805824 + 14234160249 = 131768^2 + 119307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31596966073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31596966053) 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, 377118 + ... + 453223.

It is an arithmetic number, because the mean of its divisors is an integer number (7899458617).

Almost surely, 2^31596966073 is an apocalyptic number.

It is an amenable number.

31596966073 is a deficient number, since it is larger than the sum of its proper divisors (868395).

31596966073 is an equidigital number, since it uses as much as digits as its factorization.

31596966073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868394.

The product of its (nonzero) digits is 5511240, while the sum is 55.

The spelling of 31596966073 in words is "thirty-one billion, five hundred ninety-six million, nine hundred sixty-six thousand, seventy-three".