213130783 has 2 divisors, whose sum is σ = 213130784. Its totient is φ = 213130782.

The previous prime is 213130741. The next prime is 213130817. The reversal of 213130783 is 387031312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213130783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213131783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106565391 + 106565392.

It is an arithmetic number, because the mean of its divisors is an integer number (106565392).

Almost surely, 2^213130783 is an apocalyptic number.

213130783 is a deficient number, since it is larger than the sum of its proper divisors (1).

213130783 is an equidigital number, since it uses as much as digits as its factorization.

213130783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 213130783 is about 14598.9993835194. Note that the first 3 decimals coincide. The cubic root of 213130783 is about 597.3314667382.

The spelling of 213130783 in words is "two hundred thirteen million, one hundred thirty thousand, seven hundred eighty-three".