131143291 has 2 divisors, whose sum is σ = 131143292. Its totient is φ = 131143290.

The previous prime is 131143279. The next prime is 131143333. The reversal of 131143291 is 192341131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131143291 - 2¹¹ = 131141243 is a prime.

It is not a weakly prime, because it can be changed into another prime (131143211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65571645 + 65571646.

It is an arithmetic number, because the mean of its divisors is an integer number (65571646).

Almost surely, 2^131143291 is an apocalyptic number.

131143291 is a deficient number, since it is larger than the sum of its proper divisors (1).

131143291 is an equidigital number, since it uses as much as digits as its factorization.

131143291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 131143291 is about 11451.7811278421. The cubic root of 131143291 is about 508.0604158104.

The spelling of 131143291 in words is "one hundred thirty-one million, one hundred forty-three thousand, two hundred ninety-one".