213309874 has 8 divisors (see below), whose sum is σ = 322796700. Its totient is φ = 105710976.

The previous prime is 213309841. The next prime is 213309893. The reversal of 213309874 is 478903312.

It can be written as a sum of positive squares in 2 ways, for example, as 146773225 + 66536649 = 12115^2 + 8157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×213309874² = 91002204691791752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471699 + ... + 472150.

Almost surely, 2^213309874 is an apocalyptic number.

213309874 is a deficient number, since it is larger than the sum of its proper divisors (109486826).

213309874 is a wasteful number, since it uses less digits than its factorization.

213309874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943964.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 213309874 is about 14605.1317693474. The cubic root of 213309874 is about 597.4987298281.

The spelling of 213309874 in words is "two hundred thirteen million, three hundred nine thousand, eight hundred seventy-four".