31612204573 has 2 divisors, whose sum is σ = 31612204574. Its totient is φ = 31612204572.

The previous prime is 31612204529. The next prime is 31612204601. The reversal of 31612204573 is 37540221613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30682076569 + 930128004 = 175163^2 + 30498^2 .

It is a cyclic number.

It is not a de Polignac number, because 31612204573 - 2²¹ = 31610107421 is a prime.

It is a super-2 number, since 2×31612204573² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31612204513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15806102286 + 15806102287.

It is an arithmetic number, because the mean of its divisors is an integer number (15806102287).

Almost surely, 2^31612204573 is an apocalyptic number.

It is an amenable number.

31612204573 is a deficient number, since it is larger than the sum of its proper divisors (1).

31612204573 is an equidigital number, since it uses as much as digits as its factorization.

31612204573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 31612204573 in words is "thirty-one billion, six hundred twelve million, two hundred four thousand, five hundred seventy-three".