312163349 has 2 divisors, whose sum is σ = 312163350. Its totient is φ = 312163348.

The previous prime is 312163307. The next prime is 312163361. The reversal of 312163349 is 943361213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185150449 + 127012900 = 13607^2 + 11270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312163349 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 (312163949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156081674 + 156081675.

It is an arithmetic number, because the mean of its divisors is an integer number (156081675).

Almost surely, 2^312163349 is an apocalyptic number.

It is an amenable number.

312163349 is a deficient number, since it is larger than the sum of its proper divisors (1).

312163349 is an equidigital number, since it uses as much as digits as its factorization.

312163349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 312163349 is about 17668.1450356284. The cubic root of 312163349 is about 678.3606335498.

The spelling of 312163349 in words is "three hundred twelve million, one hundred sixty-three thousand, three hundred forty-nine".