131555023 has 2 divisors, whose sum is σ = 131555024. Its totient is φ = 131555022.

The previous prime is 131555003. The next prime is 131555029. The reversal of 131555023 is 320555131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131555023 - 2²¹ = 129457871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131555029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65777511 + 65777512.

It is an arithmetic number, because the mean of its divisors is an integer number (65777512).

Almost surely, 2^131555023 is an apocalyptic number.

131555023 is a deficient number, since it is larger than the sum of its proper divisors (1).

131555023 is an equidigital number, since it uses as much as digits as its factorization.

131555023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 131555023 is about 11469.7438070778. The cubic root of 131555023 is about 508.5915554381.

The spelling of 131555023 in words is "one hundred thirty-one million, five hundred fifty-five thousand, twenty-three".