10443431421 has 12 divisors (see below), whose sum is σ = 15086827548. Its totient is φ = 6961424064.

The previous prime is 10443431389. The next prime is 10443431431. The reversal of 10443431421 is 12413434401.

It can be written as a sum of positive squares in 2 ways, for example, as 5298238521 + 5145192900 = 72789^2 + 71730^2 .

It is not a de Polignac number, because 10443431421 - 2⁵ = 10443431389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10443431431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9481 + ... + 144833.

It is an arithmetic number, because the mean of its divisors is an integer number (1257235629).

Almost surely, 2^10443431421 is an apocalyptic number.

It is an amenable number.

10443431421 is a deficient number, since it is larger than the sum of its proper divisors (4643396127).

10443431421 is a wasteful number, since it uses less digits than its factorization.

10443431421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143932 (or 143929 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 10443431421 its reverse (12413434401), we get a palindrome (22856865822).

The spelling of 10443431421 in words is "ten billion, four hundred forty-three million, four hundred thirty-one thousand, four hundred twenty-one".