311436149 has 2 divisors, whose sum is σ = 311436150. Its totient is φ = 311436148.

The previous prime is 311436101. The next prime is 311436173. The reversal of 311436149 is 941634113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157502500 + 153933649 = 12550^2 + 12407^2 .

It is a cyclic number.

It is not a de Polignac number, because 311436149 - 2¹² = 311432053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311436949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155718074 + 155718075.

It is an arithmetic number, because the mean of its divisors is an integer number (155718075).

Almost surely, 2^311436149 is an apocalyptic number.

It is an amenable number.

311436149 is a deficient number, since it is larger than the sum of its proper divisors (1).

311436149 is an equidigital number, since it uses as much as digits as its factorization.

311436149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 311436149 is about 17647.5536264945. The cubic root of 311436149 is about 677.8334657390.

The spelling of 311436149 in words is "three hundred eleven million, four hundred thirty-six thousand, one hundred forty-nine".