233161213 has 2 divisors, whose sum is σ = 233161214. Its totient is φ = 233161212.

The previous prime is 233161207. The next prime is 233161249. The reversal of 233161213 is 312161332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152843769 + 80317444 = 12363^2 + 8962^2 .

It is a cyclic number.

It is not a de Polignac number, because 233161213 - 2²¹ = 231064061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233161813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116580606 + 116580607.

It is an arithmetic number, because the mean of its divisors is an integer number (116580607).

Almost surely, 2^233161213 is an apocalyptic number.

It is an amenable number.

233161213 is a deficient number, since it is larger than the sum of its proper divisors (1).

233161213 is an equidigital number, since it uses as much as digits as its factorization.

233161213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 233161213 is about 15269.6173167503. The cubic root of 233161213 is about 615.4868359685.

The spelling of 233161213 in words is "two hundred thirty-three million, one hundred sixty-one thousand, two hundred thirteen".