213046609 has 2 divisors, whose sum is σ = 213046610. Its totient is φ = 213046608.

The previous prime is 213046597. The next prime is 213046633. The reversal of 213046609 is 906640312.

213046609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167443600 + 45603009 = 12940^2 + 6753^2 .

It is a cyclic number.

It is not a de Polignac number, because 213046609 - 2¹⁷ = 212915537 is a prime.

It is a super-3 number, since 3×213046609³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213046649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106523304 + 106523305.

It is an arithmetic number, because the mean of its divisors is an integer number (106523305).

Almost surely, 2^213046609 is an apocalyptic number.

It is an amenable number.

213046609 is a deficient number, since it is larger than the sum of its proper divisors (1).

213046609 is an equidigital number, since it uses as much as digits as its factorization.

213046609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 213046609 is about 14596.1162300113. The cubic root of 213046609 is about 597.2528195670.

The spelling of 213046609 in words is "two hundred thirteen million, forty-six thousand, six hundred nine".