213182069 has 2 divisors, whose sum is σ = 213182070. Its totient is φ = 213182068.

The previous prime is 213182063. The next prime is 213182077. The reversal of 213182069 is 960281312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182601169 + 30580900 = 13513^2 + 5530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213182069 is a prime.

It is a super-2 number, since 2×213182069² = 90893189086241522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213182063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106591034 + 106591035.

It is an arithmetic number, because the mean of its divisors is an integer number (106591035).

Almost surely, 2^213182069 is an apocalyptic number.

It is an amenable number.

213182069 is a deficient number, since it is larger than the sum of its proper divisors (1).

213182069 is an equidigital number, since it uses as much as digits as its factorization.

213182069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 213182069 is about 14600.7557681101. The cubic root of 213182069 is about 597.3793751699.

The spelling of 213182069 in words is "two hundred thirteen million, one hundred eighty-two thousand, sixty-nine".