22231013 has 4 divisors (see below), whose sum is σ = 25406880. Its totient is φ = 19055148.

The previous prime is 22230997. The next prime is 22231037. The reversal of 22231013 is 31013222.

It is a happy number.

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 not a de Polignac number, because 22231013 - 2⁴ = 22230997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22236013) 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, 1587923 + ... + 1587936.

It is an arithmetic number, because the mean of its divisors is an integer number (6351720).

Almost surely, 2^22231013 is an apocalyptic number.

It is an amenable number.

22231013 is a deficient number, since it is larger than the sum of its proper divisors (3175867).

22231013 is an equidigital number, since it uses as much as digits as its factorization.

22231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175866.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22231013 is about 4714.9775185042. The cubic root of 22231013 is about 281.1812890256.

Adding to 22231013 its reverse (31013222), we get a palindrome (53244235).

It can be divided in two parts, 222 and 31013, that multiplied together give a palindrome (6884886).

The spelling of 22231013 in words is "twenty-two million, two hundred thirty-one thousand, thirteen".