311344141 has 2 divisors, whose sum is σ = 311344142. Its totient is φ = 311344140.

The previous prime is 311344139. The next prime is 311344199. The reversal of 311344141 is 141443113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310781641 + 562500 = 17629^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 311344141 - 2¹ = 311344139 is a prime.

Together with 311344139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311344441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155672070 + 155672071.

It is an arithmetic number, because the mean of its divisors is an integer number (155672071).

Almost surely, 2^311344141 is an apocalyptic number.

It is an amenable number.

311344141 is a deficient number, since it is larger than the sum of its proper divisors (1).

311344141 is an equidigital number, since it uses as much as digits as its factorization.

311344141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 311344141 is about 17644.9466136908. The cubic root of 311344141 is about 677.7667080806.

Adding to 311344141 its reverse (141443113), we get a palindrome (452787254).

The spelling of 311344141 in words is "three hundred eleven million, three hundred forty-four thousand, one hundred forty-one".