2211431123 has 8 divisors (see below), whose sum is σ = 2437342320. Its totient is φ = 1989665280.

The previous prime is 2211431113. The next prime is 2211431137. The reversal of 2211431123 is 3211341122.

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 2211431123 - 2¹² = 2211427027 is a prime.

It is a super-2 number, since 2×2211431123² = 9780855223546082258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211431095 and 2211431104.

It is not an unprimeable number, because it can be changed into a prime (2211431113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035218 + ... + 1037351.

It is an arithmetic number, because the mean of its divisors is an integer number (304667790).

Almost surely, 2^2211431123 is an apocalyptic number.

2211431123 is a deficient number, since it is larger than the sum of its proper divisors (225911197).

2211431123 is a wasteful number, since it uses less digits than its factorization.

2211431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072677.

The product of its digits is 288, while the sum is 20.

The square root of 2211431123 is about 47025.8558986437. The cubic root of 2211431123 is about 1302.8401657943.

Adding to 2211431123 its reverse (3211341122), we get a palindrome (5422772245).

Subtracting 2211431123 from its reverse (3211341122), we obtain a palindrome (999909999).

It can be divided in two parts, 2211 and 431123, that added together give a palindrome (433334).

The spelling of 2211431123 in words is "two billion, two hundred eleven million, four hundred thirty-one thousand, one hundred twenty-three".