213277469 has 2 divisors, whose sum is σ = 213277470. Its totient is φ = 213277468.

The previous prime is 213277453. The next prime is 213277487. The reversal of 213277469 is 964772312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207216025 + 6061444 = 14395^2 + 2462^2 .

It is a cyclic number.

It is not a de Polignac number, because 213277469 - 2⁴ = 213277453 is a prime.

It is a super-2 number, since 2×213277469² = 90974557566091922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213277409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106638734 + 106638735.

It is an arithmetic number, because the mean of its divisors is an integer number (106638735).

Almost surely, 2^213277469 is an apocalyptic number.

It is an amenable number.

213277469 is a deficient number, since it is larger than the sum of its proper divisors (1).

213277469 is an equidigital number, since it uses as much as digits as its factorization.

213277469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 213277469 is about 14604.0223568714. The cubic root of 213277469 is about 597.4684719275.

The spelling of 213277469 in words is "two hundred thirteen million, two hundred seventy-seven thousand, four hundred sixty-nine".