131024591 has 2 divisors, whose sum is σ = 131024592. Its totient is φ = 131024590.

The previous prime is 131024563. The next prime is 131024609. The reversal of 131024591 is 195420131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131024591 is a prime.

It is equal to p_7433018 and since 131024591 and 7433018 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131024591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131024791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65512295 + 65512296.

It is an arithmetic number, because the mean of its divisors is an integer number (65512296).

Almost surely, 2^131024591 is an apocalyptic number.

131024591 is a deficient number, since it is larger than the sum of its proper divisors (1).

131024591 is an equidigital number, since it uses as much as digits as its factorization.

131024591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 131024591 is about 11446.5973546727. The cubic root of 131024591 is about 507.9070848624.

The spelling of 131024591 in words is "one hundred thirty-one million, twenty-four thousand, five hundred ninety-one".