312236849 has 2 divisors, whose sum is σ = 312236850. Its totient is φ = 312236848.

The previous prime is 312236783. The next prime is 312236921. The reversal of 312236849 is 948632213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308880625 + 3356224 = 17575^2 + 1832^2 .

It is a cyclic number.

It is not a de Polignac number, because 312236849 - 2²⁸ = 43801393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312236149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156118424 + 156118425.

It is an arithmetic number, because the mean of its divisors is an integer number (156118425).

Almost surely, 2^312236849 is an apocalyptic number.

It is an amenable number.

312236849 is a deficient number, since it is larger than the sum of its proper divisors (1).

312236849 is an equidigital number, since it uses as much as digits as its factorization.

312236849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 312236849 is about 17670.2249278270. The cubic root of 312236849 is about 678.4138702008.

The spelling of 312236849 in words is "three hundred twelve million, two hundred thirty-six thousand, eight hundred forty-nine".