131402565120 has 160 divisors (see below), whose sum is σ = 442187412480. Its totient is φ = 33196400640.

The previous prime is 131402565089. The next prime is 131402565127. The reversal of 131402565120 is 21565204131.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×131402565120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131402565127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304336 + ... + 596175.

It is an arithmetic number, because the mean of its divisors is an integer number (2763671328).

Almost surely, 2^131402565120 is an apocalyptic number.

131402565120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131402565120 is an abundant number, since it is smaller than the sum of its proper divisors (310784847360).

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

131402565120 is an equidigital number, since it uses as much as digits as its factorization.

131402565120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900556 (or 900540 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 131402565120 its reverse (21565204131), we get a palindrome (152967769251).

The spelling of 131402565120 in words is "one hundred thirty-one billion, four hundred two million, five hundred sixty-five thousand, one hundred twenty".