233212313 has 2 divisors, whose sum is σ = 233212314. Its totient is φ = 233212312.

The previous prime is 233212303. The next prime is 233212361. The reversal of 233212313 is 313212332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233111824 + 100489 = 15268^2 + 317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233212313 is a prime.

It is not a weakly prime, because it can be changed into another prime (233212303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116606156 + 116606157.

It is an arithmetic number, because the mean of its divisors is an integer number (116606157).

Almost surely, 2^233212313 is an apocalyptic number.

It is an amenable number.

233212313 is a deficient number, since it is larger than the sum of its proper divisors (1).

233212313 is an equidigital number, since it uses as much as digits as its factorization.

233212313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 20.

The square root of 233212313 is about 15271.2904824707. The cubic root of 233212313 is about 615.5317963910.

Adding to 233212313 its reverse (313212332), we get a palindrome (546424645).

The spelling of 233212313 in words is "two hundred thirty-three million, two hundred twelve thousand, three hundred thirteen".