30033231312 has 120 divisors (see below), whose sum is σ = 90314282016. Its totient is φ = 8575090944.

The previous prime is 30033231307. The next prime is 30033231331. The reversal of 30033231312 is 21313233003.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4411303 + ... + 4418105.

Almost surely, 2^30033231312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30033231312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45157141008).

30033231312 is an abundant number, since it is smaller than the sum of its proper divisors (60281050704).

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

30033231312 is a wasteful number, since it uses less digits than its factorization.

30033231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8705 (or 8692 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 30033231312 its reverse (21313233003), we get a palindrome (51346464315).

The spelling of 30033231312 in words is "thirty billion, thirty-three million, two hundred thirty-one thousand, three hundred twelve".