131291227592 has 36 divisors (see below), whose sum is σ = 286377892065. Its totient is φ = 56264594400.

The previous prime is 131291227553. The next prime is 131291227603. The reversal of 131291227592 is 295722192131.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 80618516356 + 50672711236 = 283934^2 + 225106^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=256214.

It is a super-2 number, since 2×131291227592² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7164842 + ... + 7183142.

Almost surely, 2^131291227592 is an apocalyptic number.

It is an amenable number.

131291227592 is an abundant number, since it is smaller than the sum of its proper divisors (155086664473).

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

131291227592 is an frugal number, since it uses more digits than its factorization.

131291227592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36622 (or 18310 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The spelling of 131291227592 in words is "one hundred thirty-one billion, two hundred ninety-one million, two hundred twenty-seven thousand, five hundred ninety-two".