21130010431 has 8 divisors (see below), whose sum is σ = 21903909840. Its totient is φ = 20366785728.

The previous prime is 21130010417. The next prime is 21130010441. The reversal of 21130010431 is 13401003112.

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 21130010431 - 2⁵ = 21130010399 is a prime.

It is a super-2 number, since 2×21130010431² (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 (21130010401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2664646 + ... + 2672563.

It is an arithmetic number, because the mean of its divisors is an integer number (2737988730).

Almost surely, 2^21130010431 is an apocalyptic number.

21130010431 is a deficient number, since it is larger than the sum of its proper divisors (773899409).

21130010431 is a wasteful number, since it uses less digits than its factorization.

21130010431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337353.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21130010431 its reverse (13401003112), we get a palindrome (34531013543).

The spelling of 21130010431 in words is "twenty-one billion, one hundred thirty million, ten thousand, four hundred thirty-one".