30321320412 has 24 divisors (see below), whose sum is σ = 70980211456. Its totient is φ = 10074183408.

The previous prime is 30321320399. The next prime is 30321320443. The reversal of 30321320412 is 21402312303.

It is a congruent number.

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, 4111588 + ... + 4118955.

Almost surely, 2^30321320412 is an apocalyptic number.

It is an amenable number.

30321320412 is an abundant number, since it is smaller than the sum of its proper divisors (40658891044).

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

30321320412 is a wasteful number, since it uses less digits than its factorization.

30321320412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8230857 (or 8230855 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 30321320412 its reverse (21402312303), we get a palindrome (51723632715).

The spelling of 30321320412 in words is "thirty billion, three hundred twenty-one million, three hundred twenty thousand, four hundred twelve".