22031013 has 16 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 13676400.

The previous prime is 22031003. The next prime is 22031017. The reversal of 22031013 is 31013022.

It is a happy number.

It is not a de Polignac number, because 22031013 - 2⁶ = 22030949 is a prime.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 22031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88 + ... + 6638.

It is an arithmetic number, because the mean of its divisors is an integer number (1965600).

Almost surely, 2^22031013 is an apocalyptic number.

It is an amenable number.

22031013 is a deficient number, since it is larger than the sum of its proper divisors (9418587).

22031013 is a wasteful number, since it uses less digits than its factorization.

22031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6632.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 22031013 is about 4693.7205924512. The cubic root of 22031013 is about 280.3355373748.

Adding to 22031013 its reverse (31013022), we get a palindrome (53044035).

Subtracting 22031013 from its reverse (31013022), we obtain a square (8982009 = 2997²).

The spelling of 22031013 in words is "twenty-two million, thirty-one thousand, thirteen".