30021351040 has 32 divisors (see below), whose sum is σ = 71769793860. Its totient is φ = 12008540160.

The previous prime is 30021351037. The next prime is 30021351043. The reversal of 30021351040 is 4015312003.

It is an interprime number because it is at equal distance from previous prime (30021351037) and next prime (30021351043).

It can be written as a sum of positive squares in 2 ways, for example, as 28485338176 + 1536012864 = 168776^2 + 39192^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 30021350999 and 30021351017.

It is not an unprimeable number, because it can be changed into a prime (30021351043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23453541 + ... + 23454820.

Almost surely, 2^30021351040 is an apocalyptic number.

It is an amenable number.

30021351040 is an abundant number, since it is smaller than the sum of its proper divisors (41748442820).

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

30021351040 is an equidigital number, since it uses as much as digits as its factorization.

30021351040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46908380 (or 46908368 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 30021351040 its reverse (4015312003), we get a palindrome (34036663043).

The spelling of 30021351040 in words is "thirty billion, twenty-one million, three hundred fifty-one thousand, forty".