213705803 has 2 divisors, whose sum is σ = 213705804. Its totient is φ = 213705802.

The previous prime is 213705781. The next prime is 213705853. The reversal of 213705803 is 308507312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213705803 - 2¹⁰ = 213704779 is a prime.

It is not a weakly prime, because it can be changed into another prime (213705853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106852901 + 106852902.

It is an arithmetic number, because the mean of its divisors is an integer number (106852902).

Almost surely, 2^213705803 is an apocalyptic number.

213705803 is a deficient number, since it is larger than the sum of its proper divisors (1).

213705803 is an equidigital number, since it uses as much as digits as its factorization.

213705803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 213705803 is about 14618.6799335645. The cubic root of 213705803 is about 597.8681780479.

The spelling of 213705803 in words is "two hundred thirteen million, seven hundred five thousand, eight hundred three".