311846149 has 2 divisors, whose sum is σ = 311846150. Its totient is φ = 311846148.

The previous prime is 311846141. The next prime is 311846209. The reversal of 311846149 is 941648113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259789924 + 52056225 = 16118^2 + 7215^2 .

It is a cyclic number.

It is not a de Polignac number, because 311846149 - 2³ = 311846141 is a prime.

It is a super-3 number, since 3×311846149³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311846141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155923074 + 155923075.

It is an arithmetic number, because the mean of its divisors is an integer number (155923075).

Almost surely, 2^311846149 is an apocalyptic number.

It is an amenable number.

311846149 is a deficient number, since it is larger than the sum of its proper divisors (1).

311846149 is an equidigital number, since it uses as much as digits as its factorization.

311846149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 311846149 is about 17659.1661467919. The cubic root of 311846149 is about 678.1307870955.

The spelling of 311846149 in words is "three hundred eleven million, eight hundred forty-six thousand, one hundred forty-nine".