33404020231 has 2 divisors, whose sum is σ = 33404020232. Its totient is φ = 33404020230.

The previous prime is 33404020217. The next prime is 33404020253. The reversal of 33404020231 is 13202040433.

It is a happy number.

It is an a-pointer prime, because the next prime (33404020253) can be obtained adding 33404020231 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33404020231 is a prime.

It is a super-2 number, since 2×33404020231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33404020211) 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 as a sum of consecutive naturals, namely, 16702010115 + 16702010116.

It is an arithmetic number, because the mean of its divisors is an integer number (16702010116).

Almost surely, 2^33404020231 is an apocalyptic number.

33404020231 is a deficient number, since it is larger than the sum of its proper divisors (1).

33404020231 is an equidigital number, since it uses as much as digits as its factorization.

33404020231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 33404020231 its reverse (13202040433), we get a palindrome (46606060664).

The spelling of 33404020231 in words is "thirty-three billion, four hundred four million, twenty thousand, two hundred thirty-one".