31020228625 has 8 divisors (see below), whose sum is σ = 38713245480. Its totient is φ = 24816182800.

The previous prime is 31020228619. The next prime is 31020228637. The reversal of 31020228625 is 52682202013.

It can be written as a sum of positive squares in 4 ways, for example, as 2012688769 + 29007539856 = 44863^2 + 170316^2 .

It is not a de Polignac number, because 31020228625 - 2¹⁷ = 31020097553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124080790 + ... + 124081039.

It is an arithmetic number, because the mean of its divisors is an integer number (4839155685).

Almost surely, 2^31020228625 is an apocalyptic number.

It is an amenable number.

31020228625 is a deficient number, since it is larger than the sum of its proper divisors (7693016855).

31020228625 is an equidigital number, since it uses as much as digits as its factorization.

31020228625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248161844 (or 248161834 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 31020228625 in words is "thirty-one billion, twenty million, two hundred twenty-eight thousand, six hundred twenty-five".