31504505325 has 12 divisors (see below), whose sum is σ = 52087448928. Its totient is φ = 16802402800.

The previous prime is 31504505297. The next prime is 31504505327. The reversal of 31504505325 is 52350540513.

It is a happy number.

It is not a de Polignac number, because 31504505325 - 2⁵ = 31504505293 is a prime.

It is a super-3 number, since 3×31504505325³ (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31504505327) 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, 210029961 + ... + 210030110.

It is an arithmetic number, because the mean of its divisors is an integer number (4340620744).

Almost surely, 2^31504505325 is an apocalyptic number.

It is an amenable number.

31504505325 is a deficient number, since it is larger than the sum of its proper divisors (20582943603).

31504505325 is a wasteful number, since it uses less digits than its factorization.

31504505325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420060084 (or 420060079 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 31504505325 in words is "thirty-one billion, five hundred four million, five hundred five thousand, three hundred twenty-five".