21132431041 has 2 divisors, whose sum is σ = 21132431042. Its totient is φ = 21132431040.

The previous prime is 21132431039. The next prime is 21132431059. The reversal of 21132431041 is 14013423112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13197184641 + 7935246400 = 114879^2 + 89080^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132431041 - 2¹ = 21132431039 is a prime.

Together with 21132431039, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21132431011) 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 as a sum of consecutive naturals, namely, 10566215520 + 10566215521.

It is an arithmetic number, because the mean of its divisors is an integer number (10566215521).

Almost surely, 2^21132431041 is an apocalyptic number.

It is an amenable number.

21132431041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132431041 is an equidigital number, since it uses as much as digits as its factorization.

21132431041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21132431041 its reverse (14013423112), we get a palindrome (35145854153).

The spelling of 21132431041 in words is "twenty-one billion, one hundred thirty-two million, four hundred thirty-one thousand, forty-one".