239481231 has 32 divisors (see below), whose sum is σ = 362520576. Its totient is φ = 139308000.

The previous prime is 239481223. The next prime is 239481241. The reversal of 239481231 is 132184932.

239481231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 239481231 - 2³ = 239481223 is a prime.

It is a super-2 number, since 2×239481231² = 114702520002550722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 239481192 and 239481201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239481241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133120 + ... + 134906.

It is an arithmetic number, because the mean of its divisors is an integer number (11328768).

Almost surely, 2^239481231 is an apocalyptic number.

239481231 is a deficient number, since it is larger than the sum of its proper divisors (123039345).

239481231 is a wasteful number, since it uses less digits than its factorization.

239481231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963.

The product of its digits is 10368, while the sum is 33.

The square root of 239481231 is about 15475.1811297962. The cubic root of 239481231 is about 620.9984182140.

The spelling of 239481231 in words is "two hundred thirty-nine million, four hundred eighty-one thousand, two hundred thirty-one".