31488820225 has 12 divisors (see below), whose sum is σ = 39327048880. Its totient is φ = 25009822800.

The previous prime is 31488820201. The next prime is 31488820273. The reversal of 31488820225 is 52202888413.

It is not a de Polignac number, because 31488820225 - 2⁵ = 31488820193 is a prime.

It is a super-3 number, since 3×31488820225³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4527291 + ... + 4534240.

Almost surely, 2^31488820225 is an apocalyptic number.

It is an amenable number.

31488820225 is a deficient number, since it is larger than the sum of its proper divisors (7838228655).

31488820225 is a wasteful number, since it uses less digits than its factorization.

31488820225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9061680 (or 9061675 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 31488820225 in words is "thirty-one billion, four hundred eighty-eight million, eight hundred twenty thousand, two hundred twenty-five".