31889030625 has 45 divisors (see below), whose sum is σ = 57583176079. Its totient is φ = 17000340000.

The previous prime is 31889030557. The next prime is 31889030647. The reversal of 31889030625 is 52603098813.

It is a happy number.

The square root of 31889030625 is 178575.

It is a perfect power (a square), and thus also a powerful number.

31889030625 is a `hidden beast` number, since 3 + 18 + 8 + 9 + 0 + 3 + 0 + 625 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 29862950481 + 2026080144 = 172809^2 + 45012^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 31889030625 - 2¹⁵ = 31888997857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 13391935 + ... + 13394315.

Almost surely, 2^31889030625 is an apocalyptic number.

31889030625 is the 178575-th square number.

31889030625 is the 89288-th centered octagonal number.

It is an amenable number.

31889030625 is a deficient number, since it is larger than the sum of its proper divisors (25694145454).

31889030625 is an frugal number, since it uses more digits than its factorization.

31889030625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4788 (or 2389 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 31889030625 in words is "thirty-one billion, eight hundred eighty-nine million, thirty thousand, six hundred twenty-five".