131290919 has 2 divisors, whose sum is σ = 131290920. Its totient is φ = 131290918.

The previous prime is 131290909. The next prime is 131290927. The reversal of 131290919 is 919092131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131290919 is a prime.

It is a super-2 number, since 2×131290919² = 34474610823729122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131290909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65645459 + 65645460.

It is an arithmetic number, because the mean of its divisors is an integer number (65645460).

Almost surely, 2^131290919 is an apocalyptic number.

131290919 is a deficient number, since it is larger than the sum of its proper divisors (1).

131290919 is an equidigital number, since it uses as much as digits as its factorization.

131290919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 131290919 is about 11458.2249497904. The cubic root of 131290919 is about 508.2509855201.

The spelling of 131290919 in words is "one hundred thirty-one million, two hundred ninety thousand, nine hundred nineteen".