131100239 has 4 divisors (see below), whose sum is σ = 131123160. Its totient is φ = 131077320.

The previous prime is 131100223. The next prime is 131100251. The reversal of 131100239 is 932001131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 932001131 = 53 ⋅17584927.

It is a cyclic number.

It is not a de Polignac number, because 131100239 - 2⁴ = 131100223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131100239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131100259) 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, 5009 + ... + 16949.

It is an arithmetic number, because the mean of its divisors is an integer number (32780790).

Almost surely, 2^131100239 is an apocalyptic number.

131100239 is a deficient number, since it is larger than the sum of its proper divisors (22921).

131100239 is a wasteful number, since it uses less digits than its factorization.

131100239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22920.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 131100239 is about 11449.9012659499. The cubic root of 131100239 is about 508.0048140057.

The spelling of 131100239 in words is "one hundred thirty-one million, one hundred thousand, two hundred thirty-nine".