239190231 has 16 divisors (see below), whose sum is σ = 377049600. Its totient is φ = 131966688.

The previous prime is 239190197. The next prime is 239190241. The reversal of 239190231 is 132091932.

It is a happy number.

It is not a de Polignac number, because 239190231 - 2⁶ = 239190167 is a prime.

It is a super-2 number, since 2×239190231² = 114423933211666722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239190241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195771 + ... + 196988.

It is an arithmetic number, because the mean of its divisors is an integer number (23565600).

Almost surely, 2^239190231 is an apocalyptic number.

239190231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

239190231 is a deficient number, since it is larger than the sum of its proper divisors (137859369).

239190231 is a wasteful number, since it uses less digits than its factorization.

239190231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392798.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 239190231 is about 15465.7761201952. The cubic root of 239190231 is about 620.7467857112.

The spelling of 239190231 in words is "two hundred thirty-nine million, one hundred ninety thousand, two hundred thirty-one".