1431321423 has 16 divisors (see below), whose sum is σ = 2181693696. Its totient is φ = 817660800.

The previous prime is 1431321403. The next prime is 1431321449. The reversal of 1431321423 is 3241231341.

It is a happy number.

It is not a de Polignac number, because 1431321423 - 2⁵ = 1431321391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1431321393 and 1431321402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431321403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85815 + ... + 101127.

It is an arithmetic number, because the mean of its divisors is an integer number (136355856).

Almost surely, 2^1431321423 is an apocalyptic number.

1431321423 is a deficient number, since it is larger than the sum of its proper divisors (750372273).

1431321423 is a wasteful number, since it uses less digits than its factorization.

1431321423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19774.

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

The square root of 1431321423 is about 37832.8088172158. The cubic root of 1431321423 is about 1126.9700914830.

Adding to 1431321423 its reverse (3241231341), we get a palindrome (4672552764).

The spelling of 1431321423 in words is "one billion, four hundred thirty-one million, three hundred twenty-one thousand, four hundred twenty-three".