33031420423 has 4 divisors (see below), whose sum is σ = 33091807480. Its totient is φ = 32971033368.

The previous prime is 33031420361. The next prime is 33031420439. The reversal of 33031420423 is 32402413033.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33031420423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33031420463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30192708 + ... + 30193801.

It is an arithmetic number, because the mean of its divisors is an integer number (8272951870).

Almost surely, 2^33031420423 is an apocalyptic number.

33031420423 is a deficient number, since it is larger than the sum of its proper divisors (60387057).

33031420423 is an equidigital number, since it uses as much as digits as its factorization.

33031420423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60387056.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 33031420423 its reverse (32402413033), we get a palindrome (65433833456).

The spelling of 33031420423 in words is "thirty-three billion, thirty-one million, four hundred twenty thousand, four hundred twenty-three".