31631606089 has 12 divisors (see below), whose sum is σ = 31975728204. Its totient is φ = 31291106112.

The previous prime is 31631606077. The next prime is 31631606099. The reversal of 31631606089 is 98060613613.

It can be written as a sum of positive squares in 6 ways, for example, as 8734771600 + 22896834489 = 93460^2 + 151317^2 .

It is not a de Polignac number, because 31631606089 - 2¹³ = 31631597897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31631606099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8992159 + ... + 8995675.

It is an arithmetic number, because the mean of its divisors is an integer number (2664644017).

Almost surely, 2^31631606089 is an apocalyptic number.

It is an amenable number.

31631606089 is a deficient number, since it is larger than the sum of its proper divisors (344122115).

31631606089 is an equidigital number, since it uses as much as digits as its factorization.

31631606089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492 (or 4383 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 31631606089 in words is "thirty-one billion, six hundred thirty-one million, six hundred six thousand, eighty-nine".