311244401 has 4 divisors (see below), whose sum is σ = 335186292. Its totient is φ = 287302512.

The previous prime is 311244391. The next prime is 311244421. The reversal of 311244401 is 104442113.

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 118701025 + 192543376 = 10895^2 + 13876^2 .

It is a cyclic number.

It is not a de Polignac number, because 311244401 - 2⁶ = 311244337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (311244421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11970926 + ... + 11970951.

It is an arithmetic number, because the mean of its divisors is an integer number (83796573).

Almost surely, 2^311244401 is an apocalyptic number.

It is an amenable number.

311244401 is a deficient number, since it is larger than the sum of its proper divisors (23941891).

311244401 is a wasteful number, since it uses less digits than its factorization.

311244401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23941890.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 311244401 is about 17642.1200823484. The cubic root of 311244401 is about 677.6943255062.

Adding to 311244401 its reverse (104442113), we get a palindrome (415686514).

The spelling of 311244401 in words is "three hundred eleven million, two hundred forty-four thousand, four hundred one".