233213137 has 2 divisors, whose sum is σ = 233213138. Its totient is φ = 233213136.

The previous prime is 233213119. The next prime is 233213147. The reversal of 233213137 is 731312332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144024001 + 89189136 = 12001^2 + 9444^2 .

It is a cyclic number.

It is not a de Polignac number, because 233213137 - 2⁷ = 233213009 is a prime.

It is not a weakly prime, because it can be changed into another prime (233213117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116606568 + 116606569.

It is an arithmetic number, because the mean of its divisors is an integer number (116606569).

Almost surely, 2^233213137 is an apocalyptic number.

It is an amenable number.

233213137 is a deficient number, since it is larger than the sum of its proper divisors (1).

233213137 is an equidigital number, since it uses as much as digits as its factorization.

233213137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 25.

The square root of 233213137 is about 15271.3174611754. The cubic root of 233213137 is about 615.5325213350.

Adding to 233213137 its reverse (731312332), we get a palindrome (964525469).

The spelling of 233213137 in words is "two hundred thirty-three million, two hundred thirteen thousand, one hundred thirty-seven".