311477141 has 2 divisors, whose sum is σ = 311477142. Its totient is φ = 311477140.

The previous prime is 311477083. The next prime is 311477147. The reversal of 311477141 is 141774113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156375025 + 155102116 = 12505^2 + 12454^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311477141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311477147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155738570 + 155738571.

It is an arithmetic number, because the mean of its divisors is an integer number (155738571).

Almost surely, 2^311477141 is an apocalyptic number.

It is an amenable number.

311477141 is a deficient number, since it is larger than the sum of its proper divisors (1).

311477141 is an equidigital number, since it uses as much as digits as its factorization.

311477141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 29.

The square root of 311477141 is about 17648.7149957157. The cubic root of 311477141 is about 677.8632038095.

The spelling of 311477141 in words is "three hundred eleven million, four hundred seventy-seven thousand, one hundred forty-one".