10423323421 has 4 divisors (see below), whose sum is σ = 11912369632. Its totient is φ = 8934277212.

The previous prime is 10423323413. The next prime is 10423323457. The reversal of 10423323421 is 12432332401.

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: 12432332401 = 15649 ⋅794449.

It is not a de Polignac number, because 10423323421 - 2³ = 10423323413 is a prime.

It is a super-2 number, since 2×10423323421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10423323481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744523095 + ... + 744523108.

It is an arithmetic number, because the mean of its divisors is an integer number (2978092408).

Almost surely, 2^10423323421 is an apocalyptic number.

It is an amenable number.

10423323421 is a deficient number, since it is larger than the sum of its proper divisors (1489046211).

10423323421 is an equidigital number, since it uses as much as digits as its factorization.

10423323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489046210.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 10423323421 its reverse (12432332401), we get a palindrome (22855655822).

The spelling of 10423323421 in words is "ten billion, four hundred twenty-three million, three hundred twenty-three thousand, four hundred twenty-one".