131316891 has 16 divisors (see below), whose sum is σ = 189913248. Its totient is φ = 80384000.

The previous prime is 131316827. The next prime is 131316907. The reversal of 131316891 is 198613131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131316891 - 2⁶ = 131316827 is a prime.

It is a super-3 number, since 3×131316891³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (131316191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29310 + ... + 33491.

It is an arithmetic number, because the mean of its divisors is an integer number (11869578).

Almost surely, 2^131316891 is an apocalyptic number.

131316891 is a deficient number, since it is larger than the sum of its proper divisors (58596357).

131316891 is a wasteful number, since it uses less digits than its factorization.

131316891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62862.

The product of its digits is 3888, while the sum is 33.

The square root of 131316891 is about 11459.3582281034. The cubic root of 131316891 is about 508.2844974196.

The spelling of 131316891 in words is "one hundred thirty-one million, three hundred sixteen thousand, eight hundred ninety-one".