30312113000 has 128 divisors (see below), whose sum is σ = 76904100000. Its totient is φ = 11116339200.

The previous prime is 30312112991. The next prime is 30312113003. The reversal of 30312113000 is 31121303.

It can be written as a sum of positive squares in 16 ways, for example, as 15846277924 + 14465835076 = 125882^2 + 120274^2 .

It is not an unprimeable number, because it can be changed into a prime (30312113003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1929176 + ... + 1944824.

Almost surely, 2^30312113000 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 30312113000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38452050000).

30312113000 is an abundant number, since it is smaller than the sum of its proper divisors (46591987000).

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

30312113000 is a wasteful number, since it uses less digits than its factorization.

30312113000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15832 (or 15818 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 30312113000 its reverse (31121303), we get a palindrome (30343234303).

The spelling of 30312113000 in words is "thirty billion, three hundred twelve million, one hundred thirteen thousand".