22630231 has 4 divisors (see below), whose sum is σ = 24371032. Its totient is φ = 20889432.

The previous prime is 22630189. The next prime is 22630241. The reversal of 22630231 is 13203622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13203622 = 2 ⋅6601811.

It is a cyclic number.

It is not a de Polignac number, because 22630231 - 2¹⁷ = 22499159 is a prime.

It is a super-2 number, since 2×22630231² = 1024254710226722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22630199 and 22630208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22630241) 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, 870381 + ... + 870406.

It is an arithmetic number, because the mean of its divisors is an integer number (6092758).

Almost surely, 2^22630231 is an apocalyptic number.

22630231 is a deficient number, since it is larger than the sum of its proper divisors (1740801).

22630231 is a wasteful number, since it uses less digits than its factorization.

22630231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740800.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 22630231 is about 4757.1242363428. The cubic root of 22630231 is about 282.8544369971.

Adding to 22630231 its reverse (13203622), we get a palindrome (35833853).

The spelling of 22630231 in words is "twenty-two million, six hundred thirty thousand, two hundred thirty-one".