323994120581 has 16 divisors (see below), whose sum is σ = 332962761600. Its totient is φ = 315161763840.

The previous prime is 323994120563. The next prime is 323994120599. The reversal of 323994120581 is 185021499323.

It is an interprime number because it is at equal distance from previous prime (323994120563) and next prime (323994120599).

It is a cyclic number.

It is not a de Polignac number, because 323994120581 - 2⁶ = 323994120517 is a prime.

It is a super-2 number, since 2×323994120581² (a number of 24 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 (323994120181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2862536 + ... + 2973566.

It is an arithmetic number, because the mean of its divisors is an integer number (20810172600).

Almost surely, 2^323994120581 is an apocalyptic number.

It is an amenable number.

323994120581 is a deficient number, since it is larger than the sum of its proper divisors (8968641019).

323994120581 is a wasteful number, since it uses less digits than its factorization.

323994120581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111644.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 323994120581 in words is "three hundred twenty-three billion, nine hundred ninety-four million, one hundred twenty thousand, five hundred eighty-one".