22000331 has 4 divisors (see below), whose sum is σ = 22010664.
Its totient is φ = 21990000.
The previous prime is 22000327. The next prime is 22000339. The reversal of 22000331 is 13300022.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13300022 = 2 ⋅6650011.
It is a cyclic number.
It is not a de Polignac number, because 22000331 - 22 = 22000327 is a prime.
It is a super-2 number, since 2×220003312 = 968029128219122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (22000339) 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, 665 + ... + 6666.
It is an arithmetic number, because the mean of its divisors is an integer number (5502666).
Almost surely, 222000331 is an apocalyptic number.
22000331 is a deficient number, since it is larger than the sum of its proper divisors (10333).
22000331 is an equidigital number, since it uses as much as digits as its factorization.
22000331 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10332.
The product of its (nonzero) digits is 36, while the sum is 11.
The square root of 22000331 is about 4690.4510444093.
The cubic root of 22000331 is about 280.2053383237.
Adding to 22000331 its reverse (13300022), we get a palindrome (35300353).
The spelling of 22000331 in words is "twenty-two million, three hundred thirty-one", and thus it is an aban number.