311121323 has 2 divisors, whose sum is σ = 311121324. Its totient is φ = 311121322.

The previous prime is 311121319. The next prime is 311121353. The reversal of 311121323 is 323121113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311121323 - 2² = 311121319 is a prime.

It is not a weakly prime, because it can be changed into another prime (311121353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155560661 + 155560662.

It is an arithmetic number, because the mean of its divisors is an integer number (155560662).

Almost surely, 2^311121323 is an apocalyptic number.

311121323 is a deficient number, since it is larger than the sum of its proper divisors (1).

311121323 is an equidigital number, since it uses as much as digits as its factorization.

311121323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 311121323 is about 17638.6315512287. The cubic root of 311121323 is about 677.6049849335.

Adding to 311121323 its reverse (323121113), we get a palindrome (634242436).

The spelling of 311121323 in words is "three hundred eleven million, one hundred twenty-one thousand, three hundred twenty-three".