22831009 has 4 divisors (see below), whose sum is σ = 22878000. Its totient is φ = 22784020.

The previous prime is 22831007. The next prime is 22831037. The reversal of 22831009 is 90013822.

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 22831009 - 2¹ = 22831007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22831007) 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, 22759 + ... + 23740.

It is an arithmetic number, because the mean of its divisors is an integer number (5719500).

Almost surely, 2^22831009 is an apocalyptic number.

It is an amenable number.

22831009 is a deficient number, since it is larger than the sum of its proper divisors (46991).

22831009 is an equidigital number, since it uses as much as digits as its factorization.

22831009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46990.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 22831009 is about 4778.1805114499. The cubic root of 22831009 is about 283.6884809091.

The spelling of 22831009 in words is "twenty-two million, eight hundred thirty-one thousand, nine".