321232313 has 2 divisors, whose sum is σ = 321232314. Its totient is φ = 321232312.

The previous prime is 321232309. The next prime is 321232321. The reversal of 321232313 is 313232123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251793424 + 69438889 = 15868^2 + 8333^2 .

It is a cyclic number.

It is not a de Polignac number, because 321232313 - 2² = 321232309 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321232363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160616156 + 160616157.

It is an arithmetic number, because the mean of its divisors is an integer number (160616157).

Almost surely, 2^321232313 is an apocalyptic number.

It is an amenable number.

321232313 is a deficient number, since it is larger than the sum of its proper divisors (1).

321232313 is an equidigital number, since it uses as much as digits as its factorization.

321232313 is an evil number, because the sum of its binary digits is even.

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

The square root of 321232313 is about 17922.9549182048. The cubic root of 321232313 is about 684.8672646712.

Adding to 321232313 its reverse (313232123), we get a palindrome (634464436).

The spelling of 321232313 in words is "three hundred twenty-one million, two hundred thirty-two thousand, three hundred thirteen".