1423440211 has 4 divisors (see below), whose sum is σ = 1424238552. Its totient is φ = 1422641872.

The previous prime is 1423440197. The next prime is 1423440229. The reversal of 1423440211 is 1120443241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1120443241 = 1877 ⋅596933.

It is a cyclic number.

It is not a de Polignac number, because 1423440211 - 2¹³ = 1423432019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423441211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396490 + ... + 400063.

It is an arithmetic number, because the mean of its divisors is an integer number (356059638).

Almost surely, 2^1423440211 is an apocalyptic number.

1423440211 is a deficient number, since it is larger than the sum of its proper divisors (798341).

1423440211 is an equidigital number, since it uses as much as digits as its factorization.

1423440211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798340.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1423440211 is about 37728.5066097242. The cubic root of 1423440211 is about 1124.8978240701.

Adding to 1423440211 its reverse (1120443241), we get a palindrome (2543883452).

It can be divided in two parts, 14234 and 40211, that added together give a palindrome (54445).

The spelling of 1423440211 in words is "one billion, four hundred twenty-three million, four hundred forty thousand, two hundred eleven".