233138977 has 2 divisors, whose sum is σ = 233138978. Its totient is φ = 233138976.

The previous prime is 233138957. The next prime is 233139013. The reversal of 233138977 is 779831332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199487376 + 33651601 = 14124^2 + 5801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233138977 is a prime.

It is not a weakly prime, because it can be changed into another prime (233138947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116569488 + 116569489.

It is an arithmetic number, because the mean of its divisors is an integer number (116569489).

Almost surely, 2^233138977 is an apocalyptic number.

It is an amenable number.

233138977 is a deficient number, since it is larger than the sum of its proper divisors (1).

233138977 is an equidigital number, since it uses as much as digits as its factorization.

233138977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 43.

The square root of 233138977 is about 15268.8891868400. The cubic root of 233138977 is about 615.4672695346.

The spelling of 233138977 in words is "two hundred thirty-three million, one hundred thirty-eight thousand, nine hundred seventy-seven".