213305142 has 16 divisors (see below), whose sum is σ = 430598592. Its totient is φ = 70437000.

The previous prime is 213305107. The next prime is 213305173. The reversal of 213305142 is 241503312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165484 + ... + 166767.

It is an arithmetic number, because the mean of its divisors is an integer number (26912412).

Almost surely, 2^213305142 is an apocalyptic number.

213305142 is an abundant number, since it is smaller than the sum of its proper divisors (217293450).

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

213305142 is a wasteful number, since it uses less digits than its factorization.

213305142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332363.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 213305142 is about 14604.9697705952. The cubic root of 213305142 is about 597.4943115534.

Adding to 213305142 its reverse (241503312), we get a palindrome (454808454).

The spelling of 213305142 in words is "two hundred thirteen million, three hundred five thousand, one hundred forty-two".