30403021012 has 48 divisors (see below), whose sum is σ = 65635702272. Its totient is φ = 11999600640.

The previous prime is 30403021009. The next prime is 30403021013. The reversal of 30403021012 is 21012030403.

It is a happy number.

It is a super-2 number, since 2×30403021012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30403021013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59988 + ... + 253780.

It is an arithmetic number, because the mean of its divisors is an integer number (1367410464).

Almost surely, 2^30403021012 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 30403021012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32817851136).

30403021012 is an abundant number, since it is smaller than the sum of its proper divisors (35232681260).

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

30403021012 is a wasteful number, since it uses less digits than its factorization.

30403021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194248 (or 194246 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30403021012 its reverse (21012030403), we get a palindrome (51415051415).

The spelling of 30403021012 in words is "thirty billion, four hundred three million, twenty-one thousand, twelve".