131024239 has 4 divisors (see below), whose sum is σ = 131107680. Its totient is φ = 130940800.

The previous prime is 131024227. The next prime is 131024263. The reversal of 131024239 is 932420131.

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

It is a cyclic number.

It is not a de Polignac number, because 131024239 - 2⁵ = 131024207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131024339) 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, 39319 + ... + 42520.

It is an arithmetic number, because the mean of its divisors is an integer number (32776920).

Almost surely, 2^131024239 is an apocalyptic number.

131024239 is a deficient number, since it is larger than the sum of its proper divisors (83441).

131024239 is an equidigital number, since it uses as much as digits as its factorization.

131024239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83440.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 131024239 is about 11446.5819789141. The cubic root of 131024239 is about 507.9066300280.

The spelling of 131024239 in words is "one hundred thirty-one million, twenty-four thousand, two hundred thirty-nine".