213944513 has 12 divisors (see below), whose sum is σ = 224759808. Its totient is φ = 203600880.

The previous prime is 213944483. The next prime is 213944527. The reversal of 213944513 is 315449312.

It is not a de Polignac number, because 213944513 - 2⁶ = 213944449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213944513.

It is not an unprimeable number, because it can be changed into a prime (213944573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57920 + ... + 61502.

It is an arithmetic number, because the mean of its divisors is an integer number (18729984).

Almost surely, 2^213944513 is an apocalyptic number.

It is an amenable number.

213944513 is a deficient number, since it is larger than the sum of its proper divisors (10815295).

213944513 is an equidigital number, since it uses as much as digits as its factorization.

213944513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712 (or 3683 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 213944513 is about 14626.8422087613. The cubic root of 213944513 is about 598.0907020431.

The spelling of 213944513 in words is "two hundred thirteen million, nine hundred forty-four thousand, five hundred thirteen".