22631329 has 4 divisors (see below), whose sum is σ = 25864384. Its totient is φ = 19398276.

The previous prime is 22631317. The next prime is 22631407. The reversal of 22631329 is 92313622.

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.

It is a cyclic number.

It is not a de Polignac number, because 22631329 - 2¹¹ = 22629281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22631297 and 22631306.

It is not an unprimeable number, because it can be changed into a prime (22631129) 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, 1616517 + ... + 1616530.

It is an arithmetic number, because the mean of its divisors is an integer number (6466096).

Almost surely, 2^22631329 is an apocalyptic number.

It is an amenable number.

22631329 is a deficient number, since it is larger than the sum of its proper divisors (3233055).

22631329 is an equidigital number, since it uses as much as digits as its factorization.

22631329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233054.

The product of its digits is 3888, while the sum is 28.

The square root of 22631329 is about 4757.2396408001. The cubic root of 22631329 is about 282.8590115438.

The spelling of 22631329 in words is "twenty-two million, six hundred thirty-one thousand, three hundred twenty-nine".