31172452300000 has 144 divisors (see below), whose sum is σ = 83682054411984. Its totient is φ = 11335436800000.

The previous prime is 31172452299997. The next prime is 31172452300039. The reversal of 31172452300000 is 325427113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13069297 + ... + 15269296.

It is an arithmetic number, because the mean of its divisors is an integer number (581125377861).

Almost surely, 2^{31172452300000} is an apocalyptic number.

It is an amenable number.

31172452300000 is an abundant number, since it is smaller than the sum of its proper divisors (52509602111984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31172452300000 is an equidigital number, since it uses as much as digits as its factorization.

31172452300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28338639 (or 28338611 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 31172452300000 its reverse (325427113), we get a palindrome (31172777727113).

The spelling of 31172452300000 in words is "thirty-one trillion, one hundred seventy-two billion, four hundred fifty-two million, three hundred thousand".