323903947 has 2 divisors, whose sum is σ = 323903948. Its totient is φ = 323903946.

The previous prime is 323903933. The next prime is 323903953. The reversal of 323903947 is 749309323.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 323903947 - 2²³ = 315515339 is a prime.

It is not a weakly prime, because it can be changed into another prime (323103947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161951973 + 161951974.

It is an arithmetic number, because the mean of its divisors is an integer number (161951974).

Almost surely, 2^323903947 is an apocalyptic number.

323903947 is a deficient number, since it is larger than the sum of its proper divisors (1).

323903947 is an equidigital number, since it uses as much as digits as its factorization.

323903947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 323903947 is about 17997.3316633328. The cubic root of 323903947 is about 686.7606664551.

The spelling of 323903947 in words is "three hundred twenty-three million, nine hundred three thousand, nine hundred forty-seven".