239981123 has 2 divisors, whose sum is σ = 239981124. Its totient is φ = 239981122.

The previous prime is 239981111. The next prime is 239981167. The reversal of 239981123 is 321189932.

239981123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239981123 - 2⁶ = 239981059 is a prime.

It is a super-2 number, since 2×239981123² = 115181878792682258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (239981023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119990561 + 119990562.

It is an arithmetic number, because the mean of its divisors is an integer number (119990562).

Almost surely, 2^239981123 is an apocalyptic number.

239981123 is a deficient number, since it is larger than the sum of its proper divisors (1).

239981123 is an equidigital number, since it uses as much as digits as its factorization.

239981123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 239981123 is about 15491.3241202939. The cubic root of 239981123 is about 621.4302076447.

The spelling of 239981123 in words is "two hundred thirty-nine million, nine hundred eighty-one thousand, one hundred twenty-three".