311342401 has 2 divisors, whose sum is σ = 311342402. Its totient is φ = 311342400.

The previous prime is 311342371. The next prime is 311342407. The reversal of 311342401 is 104243113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200250801 + 111091600 = 14151^2 + 10540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311342401 is a prime.

It is not a weakly prime, because it can be changed into another prime (311342407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155671200 + 155671201.

It is an arithmetic number, because the mean of its divisors is an integer number (155671201).

Almost surely, 2^311342401 is an apocalyptic number.

It is an amenable number.

311342401 is a deficient number, since it is larger than the sum of its proper divisors (1).

311342401 is an equidigital number, since it uses as much as digits as its factorization.

311342401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 311342401 is about 17644.8973077204. The cubic root of 311342401 is about 677.7654454732.

Adding to 311342401 its reverse (104243113), we get a palindrome (415585514).

The spelling of 311342401 in words is "three hundred eleven million, three hundred forty-two thousand, four hundred one".