131440165523 has 2 divisors, whose sum is σ = 131440165524. Its totient is φ = 131440165522.

The previous prime is 131440165489. The next prime is 131440165547. The reversal of 131440165523 is 325561044131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131440165523 - 2⁶ = 131440165459 is a prime.

It is a super-2 number, since 2×131440165523² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131440165553) 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 as a sum of consecutive naturals, namely, 65720082761 + 65720082762.

It is an arithmetic number, because the mean of its divisors is an integer number (65720082762).

Almost surely, 2^131440165523 is an apocalyptic number.

131440165523 is a deficient number, since it is larger than the sum of its proper divisors (1).

131440165523 is an equidigital number, since it uses as much as digits as its factorization.

131440165523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 131440165523 in words is "one hundred thirty-one billion, four hundred forty million, one hundred sixty-five thousand, five hundred twenty-three".