131402320502220 has 72 divisors (see below), whose sum is σ = 419565304070640. Its totient is φ = 33196375704960.

The previous prime is 131402320502083. The next prime is 131402320502221. The reversal of 131402320502220 is 22205023204131.

131402320502220 is a `hidden beast` number, since 1 + 3 + 1 + 402 + 32 + 0 + 5 + 0 + 2 + 220 = 666.

It is not an unprimeable number, because it can be changed into a prime (131402320502221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19210862151 + ... + 19210868990.

It is an arithmetic number, because the mean of its divisors is an integer number (5827295889870).

Almost surely, 2^{131402320502220} is an apocalyptic number.

131402320502220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131402320502220 is an abundant number, since it is smaller than the sum of its proper divisors (288162983568420).

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

131402320502220 is a wasteful number, since it uses less digits than its factorization.

131402320502220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38421731175 (or 38421731170 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 131402320502220 its reverse (22205023204131), we get a palindrome (153607343706351).

The spelling of 131402320502220 in words is "one hundred thirty-one trillion, four hundred two billion, three hundred twenty million, five hundred two thousand, two hundred twenty".