31953932485 has 4 divisors (see below), whose sum is σ = 38344718988. Its totient is φ = 25563145984.

The previous prime is 31953932473. The next prime is 31953932557. The reversal of 31953932485 is 58423935913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58423935913 = 7 ⋅8346276559.

It can be written as a sum of positive squares in 2 ways, for example, as 4213697569 + 27740234916 = 64913^2 + 166554^2 .

It is a cyclic number.

It is not a de Polignac number, because 31953932485 - 2⁷ = 31953932357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3195393244 + ... + 3195393253.

It is an arithmetic number, because the mean of its divisors is an integer number (9586179747).

Almost surely, 2^31953932485 is an apocalyptic number.

It is an amenable number.

31953932485 is a deficient number, since it is larger than the sum of its proper divisors (6390786503).

31953932485 is an equidigital number, since it uses as much as digits as its factorization.

31953932485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6390786502.

The product of its digits is 3499200, while the sum is 52.

The spelling of 31953932485 in words is "thirty-one billion, nine hundred fifty-three million, nine hundred thirty-two thousand, four hundred eighty-five".