311344121 has 24 divisors (see below), whose sum is σ = 354893184. Its totient is φ = 270748640.

The previous prime is 311344091. The next prime is 311344139. The reversal of 311344121 is 121443113.

It is a de Polignac number, because none of the positive numbers 2^k-311344121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311344093 and 311344102.

It is not an unprimeable number, because it can be changed into a prime (311344141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1799591 + ... + 1799763.

It is an arithmetic number, because the mean of its divisors is an integer number (14787216).

Almost surely, 2^311344121 is an apocalyptic number.

It is an amenable number.

311344121 is a deficient number, since it is larger than the sum of its proper divisors (43549063).

311344121 is a wasteful number, since it uses less digits than its factorization.

311344121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 290 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 311344121 is about 17644.9460469563. The cubic root of 311344121 is about 677.7666935679.

Adding to 311344121 its reverse (121443113), we get a palindrome (432787234).

The spelling of 311344121 in words is "three hundred eleven million, three hundred forty-four thousand, one hundred twenty-one".