234839931 has 4 divisors (see below), whose sum is σ = 313119912. Its totient is φ = 156559952.

The previous prime is 234839929. The next prime is 234839987. The reversal of 234839931 is 139938432.

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 234839931 - 2¹ = 234839929 is a prime.

It is a super-2 number, since 2×234839931² = 110299586384169522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (234839531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39139986 + ... + 39139991.

It is an arithmetic number, because the mean of its divisors is an integer number (78279978).

Almost surely, 2^234839931 is an apocalyptic number.

234839931 is a deficient number, since it is larger than the sum of its proper divisors (78279981).

234839931 is an equidigital number, since it uses as much as digits as its factorization.

234839931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78279980.

The product of its digits is 139968, while the sum is 42.

The square root of 234839931 is about 15324.4879522939. The cubic root of 234839931 is about 616.9604358612.

The spelling of 234839931 in words is "two hundred thirty-four million, eight hundred thirty-nine thousand, nine hundred thirty-one".