22312273 has 4 divisors (see below), whose sum is σ = 22645360. Its totient is φ = 21979188.

The previous prime is 22312271. The next prime is 22312307. The reversal of 22312273 is 37221322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37221322 = 2 ⋅18610661.

It is a cyclic number.

It is not a de Polignac number, because 22312273 - 2¹ = 22312271 is a prime.

It is a super-3 number, since 3×22312273³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22312271) 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, 166443 + ... + 166576.

It is an arithmetic number, because the mean of its divisors is an integer number (5661340).

Almost surely, 2^22312273 is an apocalyptic number.

It is an amenable number.

22312273 is a deficient number, since it is larger than the sum of its proper divisors (333087).

22312273 is an equidigital number, since it uses as much as digits as its factorization.

22312273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333086.

The product of its digits is 1008, while the sum is 22.

The square root of 22312273 is about 4723.5868786337. The cubic root of 22312273 is about 281.5234687928.

Adding to 22312273 its reverse (37221322), we get a palindrome (59533595).

The spelling of 22312273 in words is "twenty-two million, three hundred twelve thousand, two hundred seventy-three".