21340883 has 2 divisors, whose sum is σ = 21340884. Its totient is φ = 21340882.

The previous prime is 21340861. The next prime is 21340889. The reversal of 21340883 is 38804312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21340883 - 2¹⁰ = 21339859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21340889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10670441 + 10670442.

It is an arithmetic number, because the mean of its divisors is an integer number (10670442).

Almost surely, 2^21340883 is an apocalyptic number.

21340883 is a deficient number, since it is larger than the sum of its proper divisors (1).

21340883 is an equidigital number, since it uses as much as digits as its factorization.

21340883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 21340883 is about 4619.6193566137. The cubic root of 21340883 is about 277.3772224223.

The spelling of 21340883 in words is "twenty-one million, three hundred forty thousand, eight hundred eighty-three".