21141431023 has 2 divisors, whose sum is σ = 21141431024. Its totient is φ = 21141431022.

The previous prime is 21141431021. The next prime is 21141431033. The reversal of 21141431023 is 32013414112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21141431023 - 2¹ = 21141431021 is a prime.

Together with 21141431021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21141430985 and 21141431003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21141431021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570715511 + 10570715512.

It is an arithmetic number, because the mean of its divisors is an integer number (10570715512).

Almost surely, 2^21141431023 is an apocalyptic number.

21141431023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141431023 is an equidigital number, since it uses as much as digits as its factorization.

21141431023 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 21141431023 its reverse (32013414112), we get a palindrome (53154845135).

The spelling of 21141431023 in words is "twenty-one billion, one hundred forty-one million, four hundred thirty-one thousand, twenty-three".