131100231 has 4 divisors (see below), whose sum is σ = 174800312. Its totient is φ = 87400152.

The previous prime is 131100223. The next prime is 131100251. The reversal of 131100231 is 132001131.

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

It is not a de Polignac number, because 131100231 - 2³ = 131100223 is a prime.

It is a super-2 number, since 2×131100231² = 34374541136506722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131100251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21850036 + ... + 21850041.

It is an arithmetic number, because the mean of its divisors is an integer number (43700078).

Almost surely, 2^131100231 is an apocalyptic number.

131100231 is a deficient number, since it is larger than the sum of its proper divisors (43700081).

131100231 is an equidigital number, since it uses as much as digits as its factorization.

131100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43700080.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 131100231 is about 11449.9009166019. The cubic root of 131100231 is about 508.0048036725.

Adding to 131100231 its reverse (132001131), we get a palindrome (263101362).

The spelling of 131100231 in words is "one hundred thirty-one million, one hundred thousand, two hundred thirty-one".