10531423321 has 4 divisors (see below), whose sum is σ = 10532809600. Its totient is φ = 10530037044.

The previous prime is 10531423277. The next prime is 10531423327. The reversal of 10531423321 is 12332413501.

It is a happy number.

10531423321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12332413501 = 37 ⋅333308473.

It is a cyclic number.

It is not a de Polignac number, because 10531423321 - 2¹⁵ = 10531390553 is a prime.

It is a super-2 number, since 2×10531423321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10531423327) 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, 681681 + ... + 696958.

It is an arithmetic number, because the mean of its divisors is an integer number (2633202400).

Almost surely, 2^10531423321 is an apocalyptic number.

It is an amenable number.

10531423321 is a deficient number, since it is larger than the sum of its proper divisors (1386279).

10531423321 is an equidigital number, since it uses as much as digits as its factorization.

10531423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386278.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 10531423321 its reverse (12332413501), we get a palindrome (22863836822).

The spelling of 10531423321 in words is "ten billion, five hundred thirty-one million, four hundred twenty-three thousand, three hundred twenty-one".