213193147 has 2 divisors, whose sum is σ = 213193148. Its totient is φ = 213193146.

The previous prime is 213193133. The next prime is 213193163. The reversal of 213193147 is 741391312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213193147 is a prime.

It is not a weakly prime, because it can be changed into another prime (213193177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106596573 + 106596574.

It is an arithmetic number, because the mean of its divisors is an integer number (106596574).

Almost surely, 2^213193147 is an apocalyptic number.

213193147 is a deficient number, since it is larger than the sum of its proper divisors (1).

213193147 is an equidigital number, since it uses as much as digits as its factorization.

213193147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 213193147 is about 14601.1351271057. The cubic root of 213193147 is about 597.3897225913.

The spelling of 213193147 in words is "two hundred thirteen million, one hundred ninety-three thousand, one hundred forty-seven".