31255423132160 has 80 divisors (see below), whose sum is σ = 74948022066456. Its totient is φ = 12500791001088.

The previous prime is 31255423132139. The next prime is 31255423132169. The reversal of 31255423132160 is 6123132455213.

It can be written as a sum of positive squares in 4 ways, for example, as 30583731425536 + 671691706624 = 5530256^2 + 819568^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (31255423132169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22712072 + ... + 24048888.

Almost surely, 2^{31255423132160} is an apocalyptic number.

It is an amenable number.

31255423132160 is an abundant number, since it is smaller than the sum of its proper divisors (43692598934296).

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

31255423132160 is an equidigital number, since it uses as much as digits as its factorization.

31255423132160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345973 (or 1345957 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 31255423132160 its reverse (6123132455213), we get a palindrome (37378555587373).

The spelling of 31255423132160 in words is "thirty-one trillion, two hundred fifty-five billion, four hundred twenty-three million, one hundred thirty-two thousand, one hundred sixty".