31889057705 has 4 divisors (see below), whose sum is σ = 38266869252. Its totient is φ = 25511246160.

The previous prime is 31889057611. The next prime is 31889057719. The reversal of 31889057705 is 50775098813.

It is a happy number.

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 6372509584 + 25516548121 = 79828^2 + 159739^2 .

It is not a de Polignac number, because 31889057705 - 2²² = 31884863401 is a prime.

It is a Duffinian 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, 3188905766 + ... + 3188905775.

It is an arithmetic number, because the mean of its divisors is an integer number (9566717313).

Almost surely, 2^31889057705 is an apocalyptic number.

It is an amenable number.

31889057705 is a deficient number, since it is larger than the sum of its proper divisors (6377811547).

31889057705 is an equidigital number, since it uses as much as digits as its factorization.

31889057705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377811546.

The product of its (nonzero) digits is 2116800, while the sum is 53.

The spelling of 31889057705 in words is "thirty-one billion, eight hundred eighty-nine million, fifty-seven thousand, seven hundred five".