32420231 has 4 divisors (see below), whose sum is σ = 33538200. Its totient is φ = 31302264.

The previous prime is 32420191. The next prime is 32420243. The reversal of 32420231 is 13202423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13202423 = 13 ⋅1015571.

It is a cyclic number.

It is not a de Polignac number, because 32420231 - 2¹⁰ = 32419207 is a prime.

It is a super-2 number, since 2×32420231² = 2102142756186722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32420261) 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, 558941 + ... + 558998.

It is an arithmetic number, because the mean of its divisors is an integer number (8384550).

Almost surely, 2^32420231 is an apocalyptic number.

32420231 is a deficient number, since it is larger than the sum of its proper divisors (1117969).

32420231 is a wasteful number, since it uses less digits than its factorization.

32420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117968.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 32420231 is about 5693.8766231804. The cubic root of 32420231 is about 318.8639107930.

Adding to 32420231 its reverse (13202423), we get a palindrome (45622654).

The spelling of 32420231 in words is "thirty-two million, four hundred twenty thousand, two hundred thirty-one".