312148229 has 2 divisors, whose sum is σ = 312148230. Its totient is φ = 312148228.

The previous prime is 312148201. The next prime is 312148247. The reversal of 312148229 is 922841213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262375204 + 49773025 = 16198^2 + 7055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312148229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312148195 and 312148204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312148729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156074114 + 156074115.

It is an arithmetic number, because the mean of its divisors is an integer number (156074115).

Almost surely, 2^312148229 is an apocalyptic number.

It is an amenable number.

312148229 is a deficient number, since it is larger than the sum of its proper divisors (1).

312148229 is an equidigital number, since it uses as much as digits as its factorization.

312148229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 312148229 is about 17667.7171417249. The cubic root of 312148229 is about 678.3496809738.

The spelling of 312148229 in words is "three hundred twelve million, one hundred forty-eight thousand, two hundred twenty-nine".