30231232120 has 64 divisors (see below), whose sum is σ = 74069316000. Its totient is φ = 11061001728.

The previous prime is 30231232103. The next prime is 30231232121. The reversal of 30231232120 is 2123213203.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231232121) 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, 663787 + ... + 707866.

Almost surely, 2^30231232120 is an apocalyptic number.

It is an amenable number.

30231232120 is an abundant number, since it is smaller than the sum of its proper divisors (43838083880).

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

30231232120 is a wasteful number, since it uses less digits than its factorization.

30231232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371712 (or 1371708 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30231232120 its reverse (2123213203), we get a palindrome (32354445323).

The spelling of 30231232120 in words is "thirty billion, two hundred thirty-one million, two hundred thirty-two thousand, one hundred twenty".