31910463225 has 27 divisors (see below), whose sum is σ = 57159984973. Its totient is φ = 17017484640.

The previous prime is 31910463199. The next prime is 31910463251. The reversal of 31910463225 is 52236401913.

The square root of 31910463225 is 178635.

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

31910463225 is a `hidden beast` number, since 3 + 1 + 9 + 10 + 4 + 632 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (31910463199) and next prime (31910463251).

It can be written as a sum of positive squares in 4 ways, for example, as 2939699961 + 28970763264 = 54219^2 + 170208^2 .

It is not a de Polignac number, because 31910463225 - 2¹⁵ = 31910430457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31910463225.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2673571 + ... + 2685479.

Almost surely, 2^31910463225 is an apocalyptic number.

31910463225 is the 178635-th square number.

31910463225 is the 89318-th centered octagonal number.

It is an amenable number.

31910463225 is a deficient number, since it is larger than the sum of its proper divisors (25249521748).

31910463225 is an frugal number, since it uses more digits than its factorization.

31910463225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23834 (or 11917 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Multiplying 31910463225 by its sum of digits (36), we get a square (1148776676100 = 1071810²).

The spelling of 31910463225 in words is "thirty-one billion, nine hundred ten million, four hundred sixty-three thousand, two hundred twenty-five".