30232021 has 4 divisors (see below), whose sum is σ = 31823200. Its totient is φ = 28640844.

The previous prime is 30232009. The next prime is 30232039. The reversal of 30232021 is 12023203.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12023203 = 347 ⋅34649.

It is a cyclic number.

It is not a de Polignac number, because 30232021 - 2¹¹ = 30229973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30231992 and 30232010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30232061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795561 + ... + 795598.

It is an arithmetic number, because the mean of its divisors is an integer number (7955800).

Almost surely, 2^30232021 is an apocalyptic number.

It is an amenable number.

30232021 is a deficient number, since it is larger than the sum of its proper divisors (1591179).

30232021 is a wasteful number, since it uses less digits than its factorization.

30232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591178.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30232021 is about 5498.3653025240. The cubic root of 30232021 is about 311.5222423049.

Adding to 30232021 its reverse (12023203), we get a palindrome (42255224).

It can be divided in two parts, 3023202 and 1, that added together give a palindrome (3023203).

The spelling of 30232021 in words is "thirty million, two hundred thirty-two thousand, twenty-one".