10431124021 has 4 divisors (see below), whose sum is σ = 10431647500. Its totient is φ = 10430600544.

The previous prime is 10431123991. The next prime is 10431124079. The reversal of 10431124021 is 12042113401.

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

It can be written as a sum of positive squares in 2 ways, for example, as 373842225 + 10057281796 = 19335^2 + 100286^2 .

It is a cyclic number.

It is not a de Polignac number, because 10431124021 - 2⁷ = 10431123893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10431124021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10431121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230616 + ... + 272113.

It is an arithmetic number, because the mean of its divisors is an integer number (2607911875).

Almost surely, 2^10431124021 is an apocalyptic number.

It is an amenable number.

10431124021 is a deficient number, since it is larger than the sum of its proper divisors (523479).

10431124021 is an equidigital number, since it uses as much as digits as its factorization.

10431124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523478.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 10431124021 its reverse (12042113401), we get a palindrome (22473237422).

The spelling of 10431124021 in words is "ten billion, four hundred thirty-one million, one hundred twenty-four thousand, twenty-one".