312223829 has 2 divisors, whose sum is σ = 312223830. Its totient is φ = 312223828.

The previous prime is 312223799. The next prime is 312223843. The reversal of 312223829 is 928322213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302829604 + 9394225 = 17402^2 + 3065^2 .

It is a cyclic number.

It is not a de Polignac number, because 312223829 - 2⁸ = 312223573 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 312223795 and 312223804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312213829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156111914 + 156111915.

It is an arithmetic number, because the mean of its divisors is an integer number (156111915).

Almost surely, 2^312223829 is an apocalyptic number.

It is an amenable number.

312223829 is a deficient number, since it is larger than the sum of its proper divisors (1).

312223829 is an equidigital number, since it uses as much as digits as its factorization.

312223829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 312223829 is about 17669.8565076234. The cubic root of 312223829 is about 678.4044403173.

The spelling of 312223829 in words is "three hundred twelve million, two hundred twenty-three thousand, eight hundred twenty-nine".