233504981 has 2 divisors, whose sum is σ = 233504982. Its totient is φ = 233504980.

The previous prime is 233504951. The next prime is 233505043. The reversal of 233504981 is 189405332.

233504981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148108900 + 85396081 = 12170^2 + 9241^2 .

It is a cyclic number.

It is not a de Polignac number, because 233504981 - 2⁶ = 233504917 is a prime.

It is a super-2 number, since 2×233504981² = 109049152303620722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233504951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116752490 + 116752491.

It is an arithmetic number, because the mean of its divisors is an integer number (116752491).

Almost surely, 2^233504981 is an apocalyptic number.

It is an amenable number.

233504981 is a deficient number, since it is larger than the sum of its proper divisors (1).

233504981 is an equidigital number, since it uses as much as digits as its factorization.

233504981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 233504981 is about 15280.8697723657. The cubic root of 233504981 is about 615.7891743887.

The spelling of 233504981 in words is "two hundred thirty-three million, five hundred four thousand, nine hundred eighty-one".