131509224564 has 24 divisors (see below), whose sum is σ = 309834033600. Its totient is φ = 43410811584.

The previous prime is 131509224559. The next prime is 131509224577. The reversal of 131509224564 is 465422905131.

It is a super-2 number, since 2×131509224564² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53198289 + ... + 53200760.

It is an arithmetic number, because the mean of its divisors is an integer number (12909751400).

Almost surely, 2^131509224564 is an apocalyptic number.

It is an amenable number.

131509224564 is an abundant number, since it is smaller than the sum of its proper divisors (178324809036).

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

131509224564 is a wasteful number, since it uses less digits than its factorization.

131509224564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106399159 (or 106399157 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 131509224564 in words is "one hundred thirty-one billion, five hundred nine million, two hundred twenty-four thousand, five hundred sixty-four".