222531013 has 8 divisors (see below), whose sum is σ = 224955288. Its totient is φ = 220114944.

The previous prime is 222530981. The next prime is 222531017. The reversal of 222531013 is 310135222.

222531013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 90212004 + 132319009 = 9498^2 + 11503^2 .

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 222531013 - 2⁵ = 222530981 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 (222531017) 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, 63495 + ... + 66907.

It is an arithmetic number, because the mean of its divisors is an integer number (28119411).

Almost surely, 2^222531013 is an apocalyptic number.

It is an amenable number.

222531013 is a deficient number, since it is larger than the sum of its proper divisors (2424275).

222531013 is a wasteful number, since it uses less digits than its factorization.

222531013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 222531013 is about 14917.4734120762. The cubic root of 222531013 is about 605.9872894690.

Adding to 222531013 its reverse (310135222), we get a palindrome (532666235).

The spelling of 222531013 in words is "two hundred twenty-two million, five hundred thirty-one thousand, thirteen".