30312131300 has 72 divisors (see below), whose sum is σ = 72214544640. Its totient is φ = 10952323200.

The previous prime is 30312131287. The next prime is 30312131323. The reversal of 30312131300 is 313121303.

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, 84941 + ... + 260459.

Almost surely, 2^30312131300 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 30312131300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36107272320).

30312131300 is an abundant number, since it is smaller than the sum of its proper divisors (41902413340).

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

30312131300 is a wasteful number, since it uses less digits than its factorization.

30312131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175701 (or 175694 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30312131300 its reverse (313121303), we get a palindrome (30625252603).

The spelling of 30312131300 in words is "thirty billion, three hundred twelve million, one hundred thirty-one thousand, three hundred".