213517473 has 24 divisors (see below), whose sum is σ = 310426560. Its totient is φ = 130478400.

The previous prime is 213517457. The next prime is 213517511. The reversal of 213517473 is 374715312.

It is not a de Polignac number, because 213517473 - 2⁴ = 213517457 is a prime.

It is a super-2 number, since 2×213517473² = 91179422552611458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213517453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75163 + ... + 77951.

It is an arithmetic number, because the mean of its divisors is an integer number (12934440).

Almost surely, 2^213517473 is an apocalyptic number.

It is an amenable number.

213517473 is a deficient number, since it is larger than the sum of its proper divisors (96909087).

213517473 is a wasteful number, since it uses less digits than its factorization.

213517473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969 (or 2956 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 213517473 is about 14612.2370977205. The cubic root of 213517473 is about 597.6925010126.

The spelling of 213517473 in words is "two hundred thirteen million, five hundred seventeen thousand, four hundred seventy-three".