321023000452 has 24 divisors (see below), whose sum is σ = 700413819840. Its totient is φ = 125073896160.

The previous prime is 321023000321. The next prime is 321023000509. The reversal of 321023000452 is 254000320123.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521140927 + ... + 521141542.

It is an arithmetic number, because the mean of its divisors is an integer number (29183909160).

Almost surely, 2^321023000452 is an apocalyptic number.

It is an amenable number.

321023000452 is an abundant number, since it is smaller than the sum of its proper divisors (379390819388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321023000452 is a wasteful number, since it uses less digits than its factorization.

321023000452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042282491 (or 1042282489 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 321023000452 its reverse (254000320123), we get a palindrome (575023320575).

The spelling of 321023000452 in words is "three hundred twenty-one billion, twenty-three million, four hundred fifty-two", and thus it is an aban number.