234568381 has 2 divisors, whose sum is σ = 234568382. Its totient is φ = 234568380.

The previous prime is 234568361. The next prime is 234568391. The reversal of 234568381 is 183865432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180472356 + 54096025 = 13434^2 + 7355^2 .

It is a cyclic number.

It is not a de Polignac number, because 234568381 - 2⁵ = 234568349 is a prime.

It is a super-3 number, since 3×234568381³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234568331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117284190 + 117284191.

It is an arithmetic number, because the mean of its divisors is an integer number (117284191).

Almost surely, 2^234568381 is an apocalyptic number.

It is an amenable number.

234568381 is a deficient number, since it is larger than the sum of its proper divisors (1).

234568381 is an equidigital number, since it uses as much as digits as its factorization.

234568381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 234568381 is about 15315.6253871659. The cubic root of 234568381 is about 616.7225430093.

The spelling of 234568381 in words is "two hundred thirty-four million, five hundred sixty-eight thousand, three hundred eighty-one".