312302149 has 2 divisors, whose sum is σ = 312302150. Its totient is φ = 312302148.

The previous prime is 312302143. The next prime is 312302161. The reversal of 312302149 is 941203213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188870049 + 123432100 = 13743^2 + 11110^2 .

It is a cyclic number.

It is not a de Polignac number, because 312302149 - 2⁵ = 312302117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312302143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156151074 + 156151075.

It is an arithmetic number, because the mean of its divisors is an integer number (156151075).

Almost surely, 2^312302149 is an apocalyptic number.

It is an amenable number.

312302149 is a deficient number, since it is larger than the sum of its proper divisors (1).

312302149 is an equidigital number, since it uses as much as digits as its factorization.

312302149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 312302149 is about 17672.0725722820. The cubic root of 312302149 is about 678.4611605169.

The spelling of 312302149 in words is "three hundred twelve million, three hundred two thousand, one hundred forty-nine".