1431321121123 has 4 divisors (see below), whose sum is σ = 1440437816320. Its totient is φ = 1422204425928.

The previous prime is 1431321121103. The next prime is 1431321121163. The reversal of 1431321121123 is 3211211231341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1431321121123 - 2⁵ = 1431321121091 is a prime.

It is a super-2 number, since 2×1431321121123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431321121103) 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 3 ways as a sum of consecutive naturals, for example, 4558347363 + ... + 4558347676.

It is an arithmetic number, because the mean of its divisors is an integer number (360109454080).

Almost surely, 2^{1431321121123} is an apocalyptic number.

1431321121123 is a deficient number, since it is larger than the sum of its proper divisors (9116695197).

1431321121123 is an equidigital number, since it uses as much as digits as its factorization.

1431321121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9116695196.

The product of its digits is 864, while the sum is 25.

Adding to 1431321121123 its reverse (3211211231341), we get a palindrome (4642532352464).

The spelling of 1431321121123 in words is "one trillion, four hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-three".