213725143 has 2 divisors, whose sum is σ = 213725144. Its totient is φ = 213725142.

The previous prime is 213725119. The next prime is 213725147. The reversal of 213725143 is 341527312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213725143 - 2¹⁷ = 213594071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213725147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106862571 + 106862572.

It is an arithmetic number, because the mean of its divisors is an integer number (106862572).

Almost surely, 2^213725143 is an apocalyptic number.

213725143 is a deficient number, since it is larger than the sum of its proper divisors (1).

213725143 is an equidigital number, since it uses as much as digits as its factorization.

213725143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 213725143 is about 14619.3414010345. The cubic root of 213725143 is about 597.8862128440.

The spelling of 213725143 in words is "two hundred thirteen million, seven hundred twenty-five thousand, one hundred forty-three".