30403432021 has 8 divisors (see below), whose sum is σ = 30713874840. Its totient is φ = 30093562368.

The previous prime is 30403431997. The next prime is 30403432069. The reversal of 30403432021 is 12023430403.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11175449796 + 19227982225 = 105714^2 + 138665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30403432021 - 2⁷ = 30403431893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30403431983 and 30403432001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30403435021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36256 + ... + 249241.

It is an arithmetic number, because the mean of its divisors is an integer number (3839234355).

Almost surely, 2^30403432021 is an apocalyptic number.

It is an amenable number.

30403432021 is a deficient number, since it is larger than the sum of its proper divisors (310442819).

30403432021 is a wasteful number, since it uses less digits than its factorization.

30403432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286583.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 30403432021 its reverse (12023430403), we get a palindrome (42426862424).

The spelling of 30403432021 in words is "thirty billion, four hundred three million, four hundred thirty-two thousand, twenty-one".