312274229 has 2 divisors, whose sum is σ = 312274230. Its totient is φ = 312274228.

The previous prime is 312274223. The next prime is 312274231. The reversal of 312274229 is 922472213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202066225 + 110208004 = 14215^2 + 10498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312274229 is a prime.

It is a Sophie Germain prime.

Together with 312274231, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312274195 and 312274204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312274223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156137114 + 156137115.

It is an arithmetic number, because the mean of its divisors is an integer number (156137115).

Almost surely, 2^312274229 is an apocalyptic number.

It is an amenable number.

312274229 is a deficient number, since it is larger than the sum of its proper divisors (1).

312274229 is an equidigital number, since it uses as much as digits as its factorization.

312274229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 312274229 is about 17671.2826076660. The cubic root of 312274229 is about 678.4409416357.

The spelling of 312274229 in words is "three hundred twelve million, two hundred seventy-four thousand, two hundred twenty-nine".