32220231 has 8 divisors (see below), whose sum is σ = 43013760. Its totient is φ = 21453432.

The previous prime is 32220187. The next prime is 32220241. The reversal of 32220231 is 13202223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 32220231 - 2²² = 28025927 is a prime.

It is a super-2 number, since 2×32220231² = 2076286571386722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32220231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32220241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3675 + ... + 8828.

It is an arithmetic number, because the mean of its divisors is an integer number (5376720).

Almost surely, 2^32220231 is an apocalyptic number.

32220231 is a deficient number, since it is larger than the sum of its proper divisors (10793529).

32220231 is a wasteful number, since it uses less digits than its factorization.

32220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13365.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 32220231 is about 5676.2867263731. The cubic root of 32220231 is about 318.2068686795.

Adding to 32220231 its reverse (13202223), we get a palindrome (45422454).

The spelling of 32220231 in words is "thirty-two million, two hundred twenty thousand, two hundred thirty-one".