1423213123 has 4 divisors (see below), whose sum is σ = 1506931560. Its totient is φ = 1339494688.

The previous prime is 1423213087. The next prime is 1423213133. The reversal of 1423213123 is 3213123241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3213123241 = 127 ⋅25300183.

It is a cyclic number.

It is not a de Polignac number, because 1423213123 - 2¹³ = 1423204931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1423213094 and 1423213103.

It is not an unprimeable number, because it can be changed into a prime (1423213133) 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, 41859193 + ... + 41859226.

It is an arithmetic number, because the mean of its divisors is an integer number (376732890).

Almost surely, 2^1423213123 is an apocalyptic number.

1423213123 is a deficient number, since it is larger than the sum of its proper divisors (83718437).

1423213123 is an equidigital number, since it uses as much as digits as its factorization.

1423213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83718436.

The product of its digits is 864, while the sum is 22.

The square root of 1423213123 is about 37725.4969881114. The cubic root of 1423213123 is about 1124.8380008380.

Adding to 1423213123 its reverse (3213123241), we get a palindrome (4636336364).

The spelling of 1423213123 in words is "one billion, four hundred twenty-three million, two hundred thirteen thousand, one hundred twenty-three".