30431322312 has 16 divisors (see below), whose sum is σ = 76078305840. Its totient is φ = 10143774096.

The previous prime is 30431322239. The next prime is 30431322319. The reversal of 30431322312 is 21322313403.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1267971763 = 30431322312 / (3 + 0 + 4 + 3 + 1 + 3 + 2 + 2 + 3 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (30431322319) 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, 633985858 + ... + 633985905.

It is an arithmetic number, because the mean of its divisors is an integer number (4754894115).

Almost surely, 2^30431322312 is an apocalyptic number.

It is an amenable number.

30431322312 is an abundant number, since it is smaller than the sum of its proper divisors (45646983528).

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

30431322312 is a wasteful number, since it uses less digits than its factorization.

30431322312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267971772 (or 1267971768 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 30431322312 its reverse (21322313403), we get a palindrome (51753635715).

The spelling of 30431322312 in words is "thirty billion, four hundred thirty-one million, three hundred twenty-two thousand, three hundred twelve".