30423133 has 4 divisors (see below), whose sum is σ = 32763388. Its totient is φ = 28082880.

The previous prime is 30423131. The next prime is 30423143. The reversal of 30423133 is 33132403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12766329 + 17656804 = 3573^2 + 4202^2 .

It is a cyclic number.

It is not a de Polignac number, because 30423133 - 2¹ = 30423131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30423133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30423131) 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, 1170108 + ... + 1170133.

It is an arithmetic number, because the mean of its divisors is an integer number (8190847).

Almost surely, 2^30423133 is an apocalyptic number.

It is an amenable number.

30423133 is a deficient number, since it is larger than the sum of its proper divisors (2340255).

30423133 is a wasteful number, since it uses less digits than its factorization.

30423133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340254.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 30423133 is about 5515.7169071663. The cubic root of 30423133 is about 312.1772941764.

Adding to 30423133 its reverse (33132403), we get a palindrome (63555536).

The spelling of 30423133 in words is "thirty million, four hundred twenty-three thousand, one hundred thirty-three".