213885297 has 12 divisors (see below), whose sum is σ = 315519360. Its totient is φ = 139556088.

The previous prime is 213885253. The next prime is 213885307. The reversal of 213885297 is 792588312.

It is a happy number.

It is not a de Polignac number, because 213885297 - 2⁷ = 213885169 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (213885227) 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, 252397 + ... + 253242.

It is an arithmetic number, because the mean of its divisors is an integer number (26293280).

Almost surely, 2^213885297 is an apocalyptic number.

It is an amenable number.

213885297 is a deficient number, since it is larger than the sum of its proper divisors (101634063).

213885297 is a wasteful number, since it uses less digits than its factorization.

213885297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505692 (or 505689 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 213885297 is about 14624.8178450195. The cubic root of 213885297 is about 598.0355166953.

The spelling of 213885297 in words is "two hundred thirteen million, eight hundred eighty-five thousand, two hundred ninety-seven".