33040423231 has 4 divisors (see below), whose sum is σ = 34179748200. Its totient is φ = 31901098264.

The previous prime is 33040423223. The next prime is 33040423237. The reversal of 33040423231 is 13232404033.

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 33040423231 - 2³ = 33040423223 is a prime.

It is a super-3 number, since 3×33040423231³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33040423196 and 33040423205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33040423237) 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, 569662441 + ... + 569662498.

It is an arithmetic number, because the mean of its divisors is an integer number (8544937050).

Almost surely, 2^33040423231 is an apocalyptic number.

33040423231 is a deficient number, since it is larger than the sum of its proper divisors (1139324969).

33040423231 is a wasteful number, since it uses less digits than its factorization.

33040423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139324968.

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

Adding to 33040423231 its reverse (13232404033), we get a palindrome (46272827264).

The spelling of 33040423231 in words is "thirty-three billion, forty million, four hundred twenty-three thousand, two hundred thirty-one".