1321134423 has 24 divisors (see below), whose sum is σ = 2072150640. Its totient is φ = 746444160.

The previous prime is 1321134403. The next prime is 1321134473. The reversal of 1321134423 is 3244311231.

It is a happy number.

It is not a de Polignac number, because 1321134423 - 2⁶ = 1321134359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321134393 and 1321134402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321134403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37408 + ... + 63573.

It is an arithmetic number, because the mean of its divisors is an integer number (86339610).

Almost surely, 2^1321134423 is an apocalyptic number.

1321134423 is a deficient number, since it is larger than the sum of its proper divisors (751016217).

1321134423 is a wasteful number, since it uses less digits than its factorization.

1321134423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101087 (or 101080 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1321134423 is about 36347.4128790482. The cubic root of 1321134423 is about 1097.2754675122.

Adding to 1321134423 its reverse (3244311231), we get a palindrome (4565445654).

The spelling of 1321134423 in words is "one billion, three hundred twenty-one million, one hundred thirty-four thousand, four hundred twenty-three".