131113291 has 4 divisors (see below), whose sum is σ = 135342784. Its totient is φ = 126883800.

The previous prime is 131113289. The next prime is 131113303. The reversal of 131113291 is 192311131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131113291 - 2¹ = 131113289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131113211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2114700 + ... + 2114761.

It is an arithmetic number, because the mean of its divisors is an integer number (33835696).

Almost surely, 2^131113291 is an apocalyptic number.

131113291 is a deficient number, since it is larger than the sum of its proper divisors (4229493).

131113291 is an equidigital number, since it uses as much as digits as its factorization.

131113291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229492.

The product of its digits is 162, while the sum is 22.

The square root of 131113291 is about 11450.4712130113. The cubic root of 131113291 is about 508.0216719938.

The spelling of 131113291 in words is "one hundred thirty-one million, one hundred thirteen thousand, two hundred ninety-one".