234540331 has 2 divisors, whose sum is σ = 234540332. Its totient is φ = 234540330.

The previous prime is 234540329. The next prime is 234540337. The reversal of 234540331 is 133045432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 234540331 - 2¹ = 234540329 is a prime.

It is a super-2 number, since 2×234540331² = 110018333731179122, which contains 22 as substring.

Together with 234540329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 234540296 and 234540305.

It is not a weakly prime, because it can be changed into another prime (234540337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117270165 + 117270166.

It is an arithmetic number, because the mean of its divisors is an integer number (117270166).

Almost surely, 2^234540331 is an apocalyptic number.

234540331 is a deficient number, since it is larger than the sum of its proper divisors (1).

234540331 is an equidigital number, since it uses as much as digits as its factorization.

234540331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 234540331 is about 15314.7096283279. The cubic root of 234540331 is about 616.6979591944.

Adding to 234540331 its reverse (133045432), we get a palindrome (367585763).

The spelling of 234540331 in words is "two hundred thirty-four million, five hundred forty thousand, three hundred thirty-one".