233908081 has 4 divisors (see below), whose sum is σ = 255172464. Its totient is φ = 212643700.

The previous prime is 233908013. The next prime is 233908127. The reversal of 233908081 is 180809332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 233908081 - 2¹¹ = 233906033 is a prime.

It is a super-2 number, since 2×233908081² = 109425980714205122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233918081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10632175 + ... + 10632196.

It is an arithmetic number, because the mean of its divisors is an integer number (63793116).

Almost surely, 2^233908081 is an apocalyptic number.

It is an amenable number.

233908081 is a deficient number, since it is larger than the sum of its proper divisors (21264383).

233908081 is a wasteful number, since it uses less digits than its factorization.

233908081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21264382.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 233908081 is about 15294.0537791653. The cubic root of 233908081 is about 616.1433166074.

The spelling of 233908081 in words is "two hundred thirty-three million, nine hundred eight thousand, eighty-one".