234487931 has 2 divisors, whose sum is σ = 234487932. Its totient is φ = 234487930.

The previous prime is 234487927. The next prime is 234487943. The reversal of 234487931 is 139784432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 234487931 - 2² = 234487927 is a prime.

It is a super-2 number, since 2×234487931² = 109969179569321522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (234487951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117243965 + 117243966.

It is an arithmetic number, because the mean of its divisors is an integer number (117243966).

Almost surely, 2^234487931 is an apocalyptic number.

234487931 is a deficient number, since it is larger than the sum of its proper divisors (1).

234487931 is an equidigital number, since it uses as much as digits as its factorization.

234487931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 234487931 is about 15312.9987592241. The cubic root of 234487931 is about 616.6520290982.

The spelling of 234487931 in words is "two hundred thirty-four million, four hundred eighty-seven thousand, nine hundred thirty-one".