131192291 has 8 divisors (see below), whose sum is σ = 132894960. Its totient is φ = 129498912.

The previous prime is 131192287. The next prime is 131192297. The reversal of 131192291 is 192291131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131192291 - 2² = 131192287 is a prime.

It is a super-2 number, since 2×131192291² = 34422834435657362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131192297) 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 in 7 ways as a sum of consecutive naturals, for example, 28721 + ... + 32973.

It is an arithmetic number, because the mean of its divisors is an integer number (16611870).

Almost surely, 2^131192291 is an apocalyptic number.

131192291 is a deficient number, since it is larger than the sum of its proper divisors (1702669).

131192291 is a wasteful number, since it uses less digits than its factorization.

131192291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645.

The product of its digits is 972, while the sum is 29.

The square root of 131192291 is about 11453.9203332309. The cubic root of 131192291 is about 508.1236846727.

The spelling of 131192291 in words is "one hundred thirty-one million, one hundred ninety-two thousand, two hundred ninety-one".