311320401 has 16 divisors (see below), whose sum is σ = 475643904. Its totient is φ = 177428304.

The previous prime is 311320381. The next prime is 311320417. The reversal of 311320401 is 104023113.

It is not a de Polignac number, because 311320401 - 2⁹ = 311319889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (311320441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11311 + ... + 27396.

It is an arithmetic number, because the mean of its divisors is an integer number (29727744).

Almost surely, 2^311320401 is an apocalyptic number.

It is an amenable number.

311320401 is a deficient number, since it is larger than the sum of its proper divisors (164323503).

311320401 is a wasteful number, since it uses less digits than its factorization.

311320401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39100.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 311320401 is about 17644.2738870150. The cubic root of 311320401 is about 677.7494810656.

Adding to 311320401 its reverse (104023113), we get a palindrome (415343514).

The spelling of 311320401 in words is "three hundred eleven million, three hundred twenty thousand, four hundred one".