21141383 has 2 divisors, whose sum is σ = 21141384. Its totient is φ = 21141382.

The previous prime is 21141371. The next prime is 21141389. The reversal of 21141383 is 38314112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21141383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21141389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570691 + 10570692.

It is an arithmetic number, because the mean of its divisors is an integer number (10570692).

Almost surely, 2^21141383 is an apocalyptic number.

21141383 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141383 is an equidigital number, since it uses as much as digits as its factorization.

21141383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 21141383 is about 4597.9759677493. The cubic root of 21141383 is about 276.5101840864.

Adding to 21141383 its reverse (38314112), we get a palindrome (59455495).

The spelling of 21141383 in words is "twenty-one million, one hundred forty-one thousand, three hundred eighty-three".