22232431 has 8 divisors (see below), whose sum is σ = 24053120. Its totient is φ = 20427552.

The previous prime is 22232429. The next prime is 22232453. The reversal of 22232431 is 13423222.

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

It is a cyclic number.

It is not a de Polignac number, because 22232431 - 2¹ = 22232429 is a prime.

It is a super-2 number, since 2×22232431² = 988561976339522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22232399 and 22232408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22232401) 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, 936 + ... + 6733.

It is an arithmetic number, because the mean of its divisors is an integer number (3006640).

Almost surely, 2^22232431 is an apocalyptic number.

22232431 is a deficient number, since it is larger than the sum of its proper divisors (1820689).

22232431 is a wasteful number, since it uses less digits than its factorization.

22232431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905.

The product of its digits is 576, while the sum is 19.

The square root of 22232431 is about 4715.1278879793. The cubic root of 22232431 is about 281.1872672595.

Adding to 22232431 its reverse (13423222), we get a palindrome (35655653).

The spelling of 22232431 in words is "twenty-two million, two hundred thirty-two thousand, four hundred thirty-one".