30331121232 has 20 divisors (see below), whose sum is σ = 78355396640. Its totient is φ = 10110373728.

The previous prime is 30331121213. The next prime is 30331121237. The reversal of 30331121232 is 23212113303.

It is a junction number, because it is equal to n+sod(n) for n = 30331121199 and 30331121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30331121237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315949132 + ... + 315949227.

It is an arithmetic number, because the mean of its divisors is an integer number (3917769832).

Almost surely, 2^30331121232 is an apocalyptic number.

It is an amenable number.

30331121232 is an abundant number, since it is smaller than the sum of its proper divisors (48024275408).

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

30331121232 is a wasteful number, since it uses less digits than its factorization.

30331121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631898370 (or 631898364 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30331121232 its reverse (23212113303), we get a palindrome (53543234535).

The spelling of 30331121232 in words is "thirty billion, three hundred thirty-one million, one hundred twenty-one thousand, two hundred thirty-two".