213469811 has 2 divisors, whose sum is σ = 213469812. Its totient is φ = 213469810.

The previous prime is 213469801. The next prime is 213469819. The reversal of 213469811 is 118964312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213469811 is a prime.

It is not a weakly prime, because it can be changed into another prime (213469819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106734905 + 106734906.

It is an arithmetic number, because the mean of its divisors is an integer number (106734906).

Almost surely, 2^213469811 is an apocalyptic number.

213469811 is a deficient number, since it is larger than the sum of its proper divisors (1).

213469811 is an equidigital number, since it uses as much as digits as its factorization.

213469811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 213469811 is about 14610.6061133685. The cubic root of 213469811 is about 597.6480248088.

The spelling of 213469811 in words is "two hundred thirteen million, four hundred sixty-nine thousand, eight hundred eleven".