131580919 has 2 divisors, whose sum is σ = 131580920. Its totient is φ = 131580918.

The previous prime is 131580853. The next prime is 131580923. The reversal of 131580919 is 919085131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131580919 - 2¹¹ = 131578871 is a prime.

It is a super-2 number, since 2×131580919² = 34627076489769122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131580949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65790459 + 65790460.

It is an arithmetic number, because the mean of its divisors is an integer number (65790460).

Almost surely, 2^131580919 is an apocalyptic number.

131580919 is a deficient number, since it is larger than the sum of its proper divisors (1).

131580919 is an equidigital number, since it uses as much as digits as its factorization.

131580919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 131580919 is about 11470.8726346342. The cubic root of 131580919 is about 508.6249245499.

The spelling of 131580919 in words is "one hundred thirty-one million, five hundred eighty thousand, nine hundred nineteen".