30243131000 has 64 divisors (see below), whose sum is σ = 71139893760. Its totient is φ = 12033840000.

The previous prime is 30243130987. The next prime is 30243131011. The reversal of 30243131000 is 13134203.

It is a happy number.

It is a super-2 number, since 2×30243131000² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30243131000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111830 + ... + 270170.

It is an arithmetic number, because the mean of its divisors is an integer number (1111560840).

Almost surely, 2^30243131000 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 30243131000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35569946880).

30243131000 is an abundant number, since it is smaller than the sum of its proper divisors (40896762760).

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

30243131000 is a wasteful number, since it uses less digits than its factorization.

30243131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158553 (or 158539 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 30243131000 its reverse (13134203), we get a palindrome (30256265203).

The spelling of 30243131000 in words is "thirty billion, two hundred forty-three million, one hundred thirty-one thousand".