233878861 has 2 divisors, whose sum is σ = 233878862. Its totient is φ = 233878860.

The previous prime is 233878831. The next prime is 233878871. The reversal of 233878861 is 168878332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186186025 + 47692836 = 13645^2 + 6906^2 .

It is a cyclic number.

It is not a de Polignac number, because 233878861 - 2²¹ = 231781709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233878831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116939430 + 116939431.

It is an arithmetic number, because the mean of its divisors is an integer number (116939431).

Almost surely, 2^233878861 is an apocalyptic number.

It is an amenable number.

233878861 is a deficient number, since it is larger than the sum of its proper divisors (1).

233878861 is an equidigital number, since it uses as much as digits as its factorization.

233878861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 233878861 is about 15293.0984761101. The cubic root of 233878861 is about 616.1176591535.

The spelling of 233878861 in words is "two hundred thirty-three million, eight hundred seventy-eight thousand, eight hundred sixty-one".