33402420031 has 4 divisors (see below), whose sum is σ = 33406641712. Its totient is φ = 33398198352.

The previous prime is 33402420001. The next prime is 33402420041. The reversal of 33402420031 is 13002420433.

It is a happy number.

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 33402420031 - 2¹³ = 33402411839 is a prime.

It is a super-2 number, since 2×33402420031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33402419984 and 33402420011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33402420001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2098950 + ... + 2114803.

It is an arithmetic number, because the mean of its divisors is an integer number (8351660428).

Almost surely, 2^33402420031 is an apocalyptic number.

33402420031 is a deficient number, since it is larger than the sum of its proper divisors (4221681).

33402420031 is an equidigital number, since it uses as much as digits as its factorization.

33402420031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221680.

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

Adding to 33402420031 its reverse (13002420433), we get a palindrome (46404840464).

The spelling of 33402420031 in words is "thirty-three billion, four hundred two million, four hundred twenty thousand, thirty-one".