311401 has 4 divisors (see below), whose sum is σ = 313812. Its totient is φ = 308992.

The previous prime is 311393. The next prime is 311407. The reversal of 311401 is 104113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235225 + 76176 = 485^2 + 276^2 .

It is a cyclic number.

It is not a de Polignac number, because 311401 - 2³ = 311393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (78453).

2³¹¹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

311401 is a deficient number, since it is larger than the sum of its proper divisors (2411).

311401 is a wasteful number, since it uses less digits than its factorization.

311401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 311401 is about 558.0331531370. The cubic root of 311401 is about 67.7807964455.

Adding to 311401 its reverse (104113), we get a palindrome (415514).

The spelling of 311401 in words is "three hundred eleven thousand, four hundred one", and thus it is an iban number.