213014309 has 4 divisors (see below), whose sum is σ = 220359660. Its totient is φ = 205668960.

The previous prime is 213014281. The next prime is 213014323. The reversal of 213014309 is 903410312.

213014309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46036225 + 166978084 = 6785^2 + 12922^2 .

It is a cyclic number.

It is not a de Polignac number, because 213014309 - 2¹⁶ = 212948773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213014359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3672632 + ... + 3672689.

It is an arithmetic number, because the mean of its divisors is an integer number (55089915).

Almost surely, 2^213014309 is an apocalyptic number.

213014309 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

213014309 is a deficient number, since it is larger than the sum of its proper divisors (7345351).

213014309 is an equidigital number, since it uses as much as digits as its factorization.

213014309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7345350.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 213014309 is about 14595.0097293561. The cubic root of 213014309 is about 597.2226348715. Note that the first 3 decimals are identical.

The spelling of 213014309 in words is "two hundred thirteen million, fourteen thousand, three hundred nine".