213530373 has 12 divisors (see below), whose sum is σ = 352494688. Its totient is φ = 122017320.

The previous prime is 213530357. The next prime is 213530399. The reversal of 213530373 is 373035312.

213530373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213530373 - 2⁴ = 213530357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213530323) 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, 1694623 + ... + 1694748.

Almost surely, 2^213530373 is an apocalyptic number.

It is an amenable number.

213530373 is a deficient number, since it is larger than the sum of its proper divisors (138964315).

213530373 is a wasteful number, since it uses less digits than its factorization.

213530373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389384 (or 3389381 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 27.

The square root of 213530373 is about 14612.6785019037. The cubic root of 213530373 is about 597.7045376200.

Adding to 213530373 its reverse (373035312), we get a palindrome (586565685).

The spelling of 213530373 in words is "two hundred thirteen million, five hundred thirty thousand, three hundred seventy-three".