213461287 has 8 divisors (see below), whose sum is σ = 233120160. Its totient is φ = 194265120.

The previous prime is 213461279. The next prime is 213461291. The reversal of 213461287 is 782164312.

213461287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 213461287 - 2³ = 213461279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213461267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114712 + ... + 116557.

It is an arithmetic number, because the mean of its divisors is an integer number (29140020).

Almost surely, 2^213461287 is an apocalyptic number.

213461287 is a deficient number, since it is larger than the sum of its proper divisors (19658873).

213461287 is a wasteful number, since it uses less digits than its factorization.

213461287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231353.

The product of its digits is 16128, while the sum is 34.

The square root of 213461287 is about 14610.3144045568. The cubic root of 213461287 is about 597.6400698673.

The spelling of 213461287 in words is "two hundred thirteen million, four hundred sixty-one thousand, two hundred eighty-seven".