131844891 has 16 divisors (see below), whose sum is σ = 181971968. Its totient is φ = 84823200.

The previous prime is 131844833. The next prime is 131844943. The reversal of 131844891 is 198448131.

It is not a de Polignac number, because 131844891 - 2⁹ = 131844379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131844821) 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, 35136 + ... + 38706.

It is an arithmetic number, because the mean of its divisors is an integer number (11373248).

Almost surely, 2^131844891 is an apocalyptic number.

131844891 is a deficient number, since it is larger than the sum of its proper divisors (50127077).

131844891 is a wasteful number, since it uses less digits than its factorization.

131844891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4002.

The product of its digits is 27648, while the sum is 39.

The square root of 131844891 is about 11482.3730561239. The cubic root of 131844891 is about 508.9648245281.

The spelling of 131844891 in words is "one hundred thirty-one million, eight hundred forty-four thousand, eight hundred ninety-one".