30205123340 has 24 divisors (see below), whose sum is σ = 72492296352. Its totient is φ = 10356042240.

The previous prime is 30205123339. The next prime is 30205123357. The reversal of 30205123340 is 4332150203.

It is a super-2 number, since 2×30205123340² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107875301 + ... + 107875580.

It is an arithmetic number, because the mean of its divisors is an integer number (3020512348).

Almost surely, 2^30205123340 is an apocalyptic number.

It is an amenable number.

30205123340 is an abundant number, since it is smaller than the sum of its proper divisors (42287173012).

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

30205123340 is a wasteful number, since it uses less digits than its factorization.

30205123340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215750897 (or 215750895 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 30205123340 its reverse (4332150203), we get a palindrome (34537273543).

The spelling of 30205123340 in words is "thirty billion, two hundred five million, one hundred twenty-three thousand, three hundred forty".