33130423 has 4 divisors (see below), whose sum is σ = 33276600. Its totient is φ = 32984248.

The previous prime is 33130417. The next prime is 33130451. The reversal of 33130423 is 32403133.

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

It is a cyclic number.

It is not a de Polignac number, because 33130423 - 2²¹ = 31033271 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 33130423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33130403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72748 + ... + 73201.

It is an arithmetic number, because the mean of its divisors is an integer number (8319150).

Almost surely, 2^33130423 is an apocalyptic number.

33130423 is a deficient number, since it is larger than the sum of its proper divisors (146177).

33130423 is a wasteful number, since it uses less digits than its factorization.

33130423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146176.

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

The square root of 33130423 is about 5755.9033174646. The cubic root of 33130423 is about 321.1754394026.

Adding to 33130423 its reverse (32403133), we get a palindrome (65533556).

The spelling of 33130423 in words is "thirty-three million, one hundred thirty thousand, four hundred twenty-three".