32220131 has 8 divisors (see below), whose sum is σ = 33961680. Its totient is φ = 30520672.

The previous prime is 32220121. The next prime is 32220157. The reversal of 32220131 is 13102223.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32220131 is a prime.

It is a super-2 number, since 2×32220131² = 2076273683314322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32220121) 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, 8945 + ... + 12018.

It is an arithmetic number, because the mean of its divisors is an integer number (4245210).

Almost surely, 2^32220131 is an apocalyptic number.

32220131 is a deficient number, since it is larger than the sum of its proper divisors (1741549).

32220131 is a wasteful number, since it uses less digits than its factorization.

32220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21045.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 32220131 is about 5676.2779177908. The cubic root of 32220131 is about 318.2065394793.

Adding to 32220131 its reverse (13102223), we get a palindrome (45322354).

The spelling of 32220131 in words is "thirty-two million, two hundred twenty thousand, one hundred thirty-one".