213503694 has 16 divisors (see below), whose sum is σ = 427213440. Its totient is φ = 71133560.

The previous prime is 213503683. The next prime is 213503701. The reversal of 213503694 is 496305312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7087 + ... + 21845.

It is an arithmetic number, because the mean of its divisors is an integer number (26700840).

Almost surely, 2^213503694 is an apocalyptic number.

213503694 is an abundant number, since it is smaller than the sum of its proper divisors (213709746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213503694 is a wasteful number, since it uses less digits than its factorization.

213503694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17175.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 213503694 is about 14611.7656017334. The cubic root of 213503694 is about 597.6796437008.

The spelling of 213503694 in words is "two hundred thirteen million, five hundred three thousand, six hundred ninety-four".