213029965 has 8 divisors (see below), whose sum is σ = 255903480. Its totient is φ = 170245632.

The previous prime is 213029963. The next prime is 213030011. The reversal of 213029965 is 569920312.

It can be written as a sum of positive squares in 4 ways, for example, as 20958084 + 192071881 = 4578^2 + 13859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213029965 - 2¹ = 213029963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213029963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16920 + ... + 26689.

It is an arithmetic number, because the mean of its divisors is an integer number (31987935).

Almost surely, 2^213029965 is an apocalyptic number.

It is an amenable number.

213029965 is a deficient number, since it is larger than the sum of its proper divisors (42873515).

213029965 is an equidigital number, since it uses as much as digits as its factorization.

213029965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44591.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 213029965 is about 14595.5460672083. The cubic root of 213029965 is about 597.2372659520.

The spelling of 213029965 in words is "two hundred thirteen million, twenty-nine thousand, nine hundred sixty-five".