323402979391 has 2 divisors, whose sum is σ = 323402979392. Its totient is φ = 323402979390.

The previous prime is 323402979359. The next prime is 323402979401. The reversal of 323402979391 is 193979204323.

It is a strong prime.

It is an emirp because it is prime and its reverse (193979204323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323402979391 - 2⁵ = 323402979359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323402979791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161701489695 + 161701489696.

It is an arithmetic number, because the mean of its divisors is an integer number (161701489696).

Almost surely, 2^323402979391 is an apocalyptic number.

323402979391 is a deficient number, since it is larger than the sum of its proper divisors (1).

323402979391 is an equidigital number, since it uses as much as digits as its factorization.

323402979391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 52.

The spelling of 323402979391 in words is "three hundred twenty-three billion, four hundred two million, nine hundred seventy-nine thousand, three hundred ninety-one".