33222031 has 4 divisors (see below), whose sum is σ = 33551064. Its totient is φ = 32893000.

The previous prime is 33221999. The next prime is 33222047. The reversal of 33222031 is 13022233.

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 33222031 - 2⁵ = 33221999 is a prime.

It is a super-2 number, since 2×33222031² = 2207406687529922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33221996 and 33222014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33222061) 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, 164365 + ... + 164566.

It is an arithmetic number, because the mean of its divisors is an integer number (8387766).

Almost surely, 2^33222031 is an apocalyptic number.

33222031 is a deficient number, since it is larger than the sum of its proper divisors (329033).

33222031 is a wasteful number, since it uses less digits than its factorization.

33222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329032.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 33222031 is about 5763.8555672397. The cubic root of 33222031 is about 321.4711913668.

Adding to 33222031 its reverse (13022233), we get a palindrome (46244264).

The spelling of 33222031 in words is "thirty-three million, two hundred twenty-two thousand, thirty-one".