312103229 has 2 divisors, whose sum is σ = 312103230. Its totient is φ = 312103228.

The previous prime is 312103217. The next prime is 312103237. The reversal of 312103229 is 922301213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159012100 + 153091129 = 12610^2 + 12373^2 .

It is an emirp because it is prime and its reverse (922301213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312103229 - 2⁴ = 312103213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312106229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156051614 + 156051615.

It is an arithmetic number, because the mean of its divisors is an integer number (156051615).

Almost surely, 2^312103229 is an apocalyptic number.

It is an amenable number.

312103229 is a deficient number, since it is larger than the sum of its proper divisors (1).

312103229 is an equidigital number, since it uses as much as digits as its factorization.

312103229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 312103229 is about 17666.4435866419. The cubic root of 312103229 is about 678.3170819286.

The spelling of 312103229 in words is "three hundred twelve million, one hundred three thousand, two hundred twenty-nine".