234331681 has 2 divisors, whose sum is σ = 234331682. Its totient is φ = 234331680.

The previous prime is 234331673. The next prime is 234331711. The reversal of 234331681 is 186133432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233600656 + 731025 = 15284^2 + 855^2 .

It is a cyclic number.

It is not a de Polignac number, because 234331681 - 2³ = 234331673 is a prime.

It is a super-2 number, since 2×234331681² = 109822673440571522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (234331651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117165840 + 117165841.

It is an arithmetic number, because the mean of its divisors is an integer number (117165841).

Almost surely, 2^234331681 is an apocalyptic number.

It is an amenable number.

234331681 is a deficient number, since it is larger than the sum of its proper divisors (1).

234331681 is an equidigital number, since it uses as much as digits as its factorization.

234331681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 234331681 is about 15307.8960344000. The cubic root of 234331681 is about 616.5150308765.

The spelling of 234331681 in words is "two hundred thirty-four million, three hundred thirty-one thousand, six hundred eighty-one".