131402322451521 has 24 divisors (see below), whose sum is σ = 207077187270720. Its totient is φ = 79630470338400.

The previous prime is 131402322451513. The next prime is 131402322451523. The reversal of 131402322451521 is 125154223204131.

131402322451521 is a `hidden beast` number, since 1 + 3 + 1 + 40 + 23 + 2 + 24 + 51 + 521 = 666.

It is not a de Polignac number, because 131402322451521 - 2³ = 131402322451513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131402322451523) 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, 59754925 + ... + 61914906.

It is an arithmetic number, because the mean of its divisors is an integer number (8628216136280).

Almost surely, 2^{131402322451521} is an apocalyptic number.

131402322451521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131402322451521 is a deficient number, since it is larger than the sum of its proper divisors (75674864819199).

131402322451521 is a wasteful number, since it uses less digits than its factorization.

131402322451521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121680757 (or 121680754 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 131402322451521 its reverse (125154223204131), we get a palindrome (256556545655652).

The spelling of 131402322451521 in words is "one hundred thirty-one trillion, four hundred two billion, three hundred twenty-two million, four hundred fifty-one thousand, five hundred twenty-one".