1321031423 has 8 divisors (see below), whose sum is σ = 1352279808. Its totient is φ = 1289807064.

The previous prime is 1321031401. The next prime is 1321031431. The reversal of 1321031423 is 3241301231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321031423 - 2⁸ = 1321031167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321031395 and 1321031404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321031483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156140 + ... + 164382.

It is an arithmetic number, because the mean of its divisors is an integer number (169034976).

Almost surely, 2^1321031423 is an apocalyptic number.

1321031423 is a deficient number, since it is larger than the sum of its proper divisors (31248385).

1321031423 is an equidigital number, since it uses as much as digits as its factorization.

1321031423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12013.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1321031423 is about 36345.9959692949. The cubic root of 1321031423 is about 1097.2469510321.

Adding to 1321031423 its reverse (3241301231), we get a palindrome (4562332654).

The spelling of 1321031423 in words is "one billion, three hundred twenty-one million, thirty-one thousand, four hundred twenty-three".