131130491 has 2 divisors, whose sum is σ = 131130492. Its totient is φ = 131130490.

The previous prime is 131130487. The next prime is 131130497. The reversal of 131130491 is 194031131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131130491 - 2² = 131130487 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131130497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65565245 + 65565246.

It is an arithmetic number, because the mean of its divisors is an integer number (65565246).

Almost surely, 2^131130491 is an apocalyptic number.

131130491 is a deficient number, since it is larger than the sum of its proper divisors (1).

131130491 is an equidigital number, since it uses as much as digits as its factorization.

131130491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 131130491 is about 11451.2222491750. Note that the first 4 decimals coincide. The cubic root of 131130491 is about 508.0438858381.

The spelling of 131130491 in words is "one hundred thirty-one million, one hundred thirty thousand, four hundred ninety-one".