131540237293 has 2 divisors, whose sum is σ = 131540237294. Its totient is φ = 131540237292.

The previous prime is 131540237261. The next prime is 131540237321. The reversal of 131540237293 is 392732045131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116323287844 + 15216949449 = 341062^2 + 123357^2 .

It is a cyclic number.

It is not a de Polignac number, because 131540237293 - 2⁵ = 131540237261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131540217293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65770118646 + 65770118647.

It is an arithmetic number, because the mean of its divisors is an integer number (65770118647).

Almost surely, 2^131540237293 is an apocalyptic number.

It is an amenable number.

131540237293 is a deficient number, since it is larger than the sum of its proper divisors (1).

131540237293 is an equidigital number, since it uses as much as digits as its factorization.

131540237293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 131540237293 in words is "one hundred thirty-one billion, five hundred forty million, two hundred thirty-seven thousand, two hundred ninety-three".