323988961 has 4 divisors (see below), whose sum is σ = 331523632. Its totient is φ = 316454292.

The previous prime is 323988953. The next prime is 323988991. The reversal of 323988961 is 169889323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169889323 = 73 ⋅2327251.

It is a cyclic number.

It is not a de Polignac number, because 323988961 - 2³ = 323988953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323988991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3767271 + ... + 3767356.

It is an arithmetic number, because the mean of its divisors is an integer number (82880908).

Almost surely, 2^323988961 is an apocalyptic number.

It is an amenable number.

323988961 is a deficient number, since it is larger than the sum of its proper divisors (7534671).

323988961 is an equidigital number, since it uses as much as digits as its factorization.

323988961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7534670.

The product of its digits is 559872, while the sum is 49.

The square root of 323988961 is about 17999.6933584992. The cubic root of 323988961 is about 686.8207451344.

The spelling of 323988961 in words is "three hundred twenty-three million, nine hundred eighty-eight thousand, nine hundred sixty-one".