30443141021 has 4 divisors (see below), whose sum is σ = 31766755872. Its totient is φ = 29119526172.

The previous prime is 30443140997. The next prime is 30443141041. The reversal of 30443141021 is 12014134403.

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.

It is a cyclic number.

It is not a de Polignac number, because 30443141021 - 2⁶ = 30443140957 is a prime.

It is a super-3 number, since 3×30443141021³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1323614827 = 30443141021 / (3 + 0 + 4 + 4 + 3 + 1 + 4 + 1 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30443141041) 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, 661807391 + ... + 661807436.

It is an arithmetic number, because the mean of its divisors is an integer number (7941688968).

Almost surely, 2^30443141021 is an apocalyptic number.

It is an amenable number.

30443141021 is a deficient number, since it is larger than the sum of its proper divisors (1323614851).

30443141021 is a wasteful number, since it uses less digits than its factorization.

30443141021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323614850.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 30443141021 its reverse (12014134403), we get a palindrome (42457275424).

The spelling of 30443141021 in words is "thirty billion, four hundred forty-three million, one hundred forty-one thousand, twenty-one".