422513213 has 4 divisors (see below), whose sum is σ = 422740668. Its totient is φ = 422285760.

The previous prime is 422513153. The next prime is 422513239. The reversal of 422513213 is 312315224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100741369 + 321771844 = 10037^2 + 17938^2 .

It is a cyclic number.

It is not a de Polignac number, because 422513213 - 2⁶ = 422513149 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 (422513293) 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, 110918 + ... + 114663.

It is an arithmetic number, because the mean of its divisors is an integer number (105685167).

Almost surely, 2^422513213 is an apocalyptic number.

It is an amenable number.

422513213 is a deficient number, since it is larger than the sum of its proper divisors (227455).

422513213 is a wasteful number, since it uses less digits than its factorization.

422513213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227454.

The product of its digits is 1440, while the sum is 23.

The square root of 422513213 is about 20555.1261976180. The cubic root of 422513213 is about 750.3780097425.

Adding to 422513213 its reverse (312315224), we get a palindrome (734828437).

The spelling of 422513213 in words is "four hundred twenty-two million, five hundred thirteen thousand, two hundred thirteen".