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2223231213 = 37105868153
BaseRepresentation
bin1000010010000011…
…1101000011101101
312201221101211212210
42010200331003231
514023121344323
61004335321033
7106044103440
oct20440750355
95657354783
102223231213
11a40a57575
12520680179
132957a6738
141713a7657
15d02aa293
hex8483d0ed

2223231213 has 8 divisors (see below), whose sum is σ = 3387780928. Its totient is φ = 1270417824.

The previous prime is 2223231203. The next prime is 2223231229. The reversal of 2223231213 is 3121323222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2223231213 - 26 = 2223231149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 105868153 = 2223231213 / (2 + 2 + 2 + 3 + 2 + 3 + 1 + 2 + 1 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 2223231213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223231203) 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, 52934056 + ... + 52934097.

It is an arithmetic number, because the mean of its divisors is an integer number (423472616).

Almost surely, 22223231213 is an apocalyptic number.

It is an amenable number.

2223231213 is a deficient number, since it is larger than the sum of its proper divisors (1164549715).

2223231213 is a wasteful number, since it uses less digits than its factorization.

2223231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105868163.

The product of its digits is 864, while the sum is 21.

The square root of 2223231213 is about 47151.1528279002. The cubic root of 2223231213 is about 1305.1533537726.

Adding to 2223231213 its reverse (3121323222), we get a palindrome (5344554435).

The spelling of 2223231213 in words is "two billion, two hundred twenty-three million, two hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 3 7 21 105868153 317604459 741077071 2223231213