213473069 has 2 divisors, whose sum is σ = 213473070. Its totient is φ = 213473068.

The previous prime is 213473059. The next prime is 213473077. The reversal of 213473069 is 960374312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 95316169 = 10870^2 + 9763^2 .

It is a cyclic number.

It is not a de Polignac number, because 213473069 - 2¹² = 213468973 is a prime.

It is a super-2 number, since 2×213473069² = 91141502376557522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213473059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106736534 + 106736535.

It is an arithmetic number, because the mean of its divisors is an integer number (106736535).

Almost surely, 2^213473069 is an apocalyptic number.

It is an amenable number.

213473069 is a deficient number, since it is larger than the sum of its proper divisors (1).

213473069 is an equidigital number, since it uses as much as digits as its factorization.

213473069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 213473069 is about 14610.7176072909. The cubic root of 213473069 is about 597.6510652502.

The spelling of 213473069 in words is "two hundred thirteen million, four hundred seventy-three thousand, sixty-nine".