213841906 has 8 divisors (see below), whose sum is σ = 331110144. Its totient is φ = 103471860.

The previous prime is 213841871. The next prime is 213841921. The reversal of 213841906 is 609148312.

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

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, 1724470 + ... + 1724593.

It is an arithmetic number, because the mean of its divisors is an integer number (41388768).

Almost surely, 2^213841906 is an apocalyptic number.

213841906 is a deficient number, since it is larger than the sum of its proper divisors (117268238).

213841906 is a wasteful number, since it uses less digits than its factorization.

213841906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449096.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 213841906 is about 14623.3342983056. The cubic root of 213841906 is about 597.9950727215.

It can be divided in two parts, 2138 and 41906, that added together give a palindrome (44044).

The spelling of 213841906 in words is "two hundred thirteen million, eight hundred forty-one thousand, nine hundred six".