22321131 has 8 divisors (see below), whose sum is σ = 34013184. Its totient is φ = 12754920.

The previous prime is 22321127. The next prime is 22321133. The reversal of 22321131 is 13112322.

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

It is not a de Polignac number, because 22321131 - 2² = 22321127 is a prime.

It is a super-3 number, since 3×22321131³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 22321131.

It is not an unprimeable number, because it can be changed into a prime (22321133) 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, 531435 + ... + 531476.

It is an arithmetic number, because the mean of its divisors is an integer number (4251648).

Almost surely, 2^22321131 is an apocalyptic number.

22321131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22321131 is a deficient number, since it is larger than the sum of its proper divisors (11692053).

22321131 is a wasteful number, since it uses less digits than its factorization.

22321131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062921.

The product of its digits is 72, while the sum is 15.

The square root of 22321131 is about 4724.5244205105. The cubic root of 22321131 is about 281.5607189190.

Adding to 22321131 its reverse (13112322), we get a palindrome (35433453).

The spelling of 22321131 in words is "twenty-two million, three hundred twenty-one thousand, one hundred thirty-one".