213880491 has 12 divisors (see below), whose sum is σ = 337023960. Its totient is φ = 129624480.

The previous prime is 213880483. The next prime is 213880507. The reversal of 213880491 is 194088312.

It is not a de Polignac number, because 213880491 - 2³ = 213880483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213880591) 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, 1080106 + ... + 1080303.

It is an arithmetic number, because the mean of its divisors is an integer number (28085330).

Almost surely, 2^213880491 is an apocalyptic number.

213880491 is a deficient number, since it is larger than the sum of its proper divisors (123143469).

213880491 is a wasteful number, since it uses less digits than its factorization.

213880491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160426 (or 2160423 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 213880491 is about 14624.6535343577. The cubic root of 213880491 is about 598.0310373782.

The spelling of 213880491 in words is "two hundred thirteen million, eight hundred eighty thousand, four hundred ninety-one".