213129703 has 2 divisors, whose sum is σ = 213129704. Its totient is φ = 213129702.

The previous prime is 213129691. The next prime is 213129713. The reversal of 213129703 is 307921312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213129703 - 2¹⁷ = 212998631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213129713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106564851 + 106564852.

It is an arithmetic number, because the mean of its divisors is an integer number (106564852).

Almost surely, 2^213129703 is an apocalyptic number.

213129703 is a deficient number, since it is larger than the sum of its proper divisors (1).

213129703 is an equidigital number, since it uses as much as digits as its factorization.

213129703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 213129703 is about 14598.9623946361. The cubic root of 213129703 is about 597.3304577817.

The spelling of 213129703 in words is "two hundred thirteen million, one hundred twenty-nine thousand, seven hundred three".