233530081 has 2 divisors, whose sum is σ = 233530082. Its totient is φ = 233530080.

The previous prime is 233530049. The next prime is 233530091. The reversal of 233530081 is 180035332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221861025 + 11669056 = 14895^2 + 3416^2 .

It is a cyclic number.

It is not a de Polignac number, because 233530081 - 2⁵ = 233530049 is a prime.

It is a super-2 number, since 2×233530081² = 109072597463733122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (233530091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116765040 + 116765041.

It is an arithmetic number, because the mean of its divisors is an integer number (116765041).

Almost surely, 2^233530081 is an apocalyptic number.

It is an amenable number.

233530081 is a deficient number, since it is larger than the sum of its proper divisors (1).

233530081 is an equidigital number, since it uses as much as digits as its factorization.

233530081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 233530081 is about 15281.6910386253. The cubic root of 233530081 is about 615.8112378074.

The spelling of 233530081 in words is "two hundred thirty-three million, five hundred thirty thousand, eighty-one".