233121151 has 2 divisors, whose sum is σ = 233121152. Its totient is φ = 233121150.

The previous prime is 233121107. The next prime is 233121173. The reversal of 233121151 is 151121332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 233121151 - 2⁹ = 233120639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233121101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116560575 + 116560576.

It is an arithmetic number, because the mean of its divisors is an integer number (116560576).

Almost surely, 2^233121151 is an apocalyptic number.

233121151 is a deficient number, since it is larger than the sum of its proper divisors (1).

233121151 is an equidigital number, since it uses as much as digits as its factorization.

233121151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 233121151 is about 15268.3054397009. The cubic root of 233121151 is about 615.4515827551.

Adding to 233121151 its reverse (151121332), we get a palindrome (384242483).

The spelling of 233121151 in words is "two hundred thirty-three million, one hundred twenty-one thousand, one hundred fifty-one".