131240237597 has 4 divisors (see below), whose sum is σ = 149988842976. Its totient is φ = 112491632220.

The previous prime is 131240237591. The next prime is 131240237603. The reversal of 131240237597 is 795732042131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 795732042131 = 13 ⋅61210157087.

It is an interprime number because it is at equal distance from previous prime (131240237591) and next prime (131240237603).

It is a cyclic number.

It is not a de Polignac number, because 131240237597 - 2¹⁶ = 131240172061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131240237591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9374302679 + ... + 9374302692.

It is an arithmetic number, because the mean of its divisors is an integer number (37497210744).

Almost surely, 2^131240237597 is an apocalyptic number.

It is an amenable number.

131240237597 is a deficient number, since it is larger than the sum of its proper divisors (18748605379).

131240237597 is an equidigital number, since it uses as much as digits as its factorization.

131240237597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18748605378.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 131240237597 in words is "one hundred thirty-one billion, two hundred forty million, two hundred thirty-seven thousand, five hundred ninety-seven".