33142231 has 6 divisors (see below), whose sum is σ = 35206760. Its totient is φ = 31192416.

The previous prime is 33142211. The next prime is 33142267. The reversal of 33142231 is 13224133.

It is not a de Polignac number, because 33142231 - 2⁵ = 33142199 is a prime.

It is a super-2 number, since 2×33142231² = 2196814951314722, 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 = 33142199 and 33142208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33142211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57051 + ... + 57628.

Almost surely, 2^33142231 is an apocalyptic number.

33142231 is a deficient number, since it is larger than the sum of its proper divisors (2064529).

33142231 is a wasteful number, since it uses less digits than its factorization.

33142231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114713 (or 114696 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 33142231 is about 5756.9289556151. The cubic root of 33142231 is about 321.2135915377.

Adding to 33142231 its reverse (13224133), we get a palindrome (46366364).

The spelling of 33142231 in words is "thirty-three million, one hundred forty-two thousand, two hundred thirty-one".