20223013 has 8 divisors (see below), whose sum is σ = 21551832. Its totient is φ = 18909696.

The previous prime is 20222987. The next prime is 20223023. The reversal of 20223013 is 31032202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 134689 + 20088324 = 367^2 + 4482^2 .

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 20223013 - 2¹⁷ = 20091941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20222984 and 20223002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223023) 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, 1120 + ... + 6457.

It is an arithmetic number, because the mean of its divisors is an integer number (2693979).

Almost surely, 2^20223013 is an apocalyptic number.

It is an amenable number.

20223013 is a deficient number, since it is larger than the sum of its proper divisors (1328819).

20223013 is a wasteful number, since it uses less digits than its factorization.

20223013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7751.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20223013 is about 4497.0004447409. Note that the first 3 decimals coincide. The cubic root of 20223013 is about 272.4469520507.

Adding to 20223013 its reverse (31032202), we get a palindrome (51255215).

The spelling of 20223013 in words is "twenty million, two hundred twenty-three thousand, thirteen".