1323023220989 has 8 divisors (see below), whose sum is σ = 1367054941440. Its totient is φ = 1279076097600.

The previous prime is 1323023220943. The next prime is 1323023221019. The reversal of 1323023220989 is 9890223203231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323023220989 - 2²⁸ = 1322754785533 is a prime.

It is a super-2 number, since 2×1323023220989² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323023220929) 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 7 ways as a sum of consecutive naturals, for example, 21117467 + ... + 21180024.

It is an arithmetic number, because the mean of its divisors is an integer number (170881867680).

Almost surely, 2^{1323023220989} is an apocalyptic number.

It is an amenable number.

1323023220989 is a deficient number, since it is larger than the sum of its proper divisors (44031720451).

1323023220989 is a wasteful number, since it uses less digits than its factorization.

1323023220989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42298531.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 1323023220989 in words is "one trillion, three hundred twenty-three billion, twenty-three million, two hundred twenty thousand, nine hundred eighty-nine".