213460013 has 6 divisors (see below), whose sum is σ = 231143274. Its totient is φ = 197039856.

The previous prime is 213459989. The next prime is 213460019. The reversal of 213460013 is 310064312.

It can be written as a sum of positive squares in 3 ways, for example, as 5004169 + 208455844 = 2237^2 + 14438^2 .

It is not a de Polignac number, because 213460013 - 2¹² = 213455917 is a prime.

It is a super-3 number, since 3×213460013³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213460019) 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 5 ways as a sum of consecutive naturals, for example, 631370 + ... + 631707.

It is an arithmetic number, because the mean of its divisors is an integer number (38523879).

Almost surely, 2^213460013 is an apocalyptic number.

It is an amenable number.

213460013 is a deficient number, since it is larger than the sum of its proper divisors (17683261).

213460013 is a wasteful number, since it uses less digits than its factorization.

213460013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263103 (or 1263090 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 213460013 is about 14610.2708051562. The cubic root of 213460013 is about 597.6388809008.

The spelling of 213460013 in words is "two hundred thirteen million, four hundred sixty thousand, thirteen".