213140906 has 16 divisors (see below), whose sum is σ = 352232928. Its totient is φ = 95922000.

The previous prime is 213140899. The next prime is 213140909. The reversal of 213140906 is 609041312.

213140906 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213140909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45740 + ... + 50183.

It is an arithmetic number, because the mean of its divisors is an integer number (22014558).

Almost surely, 2^213140906 is an apocalyptic number.

213140906 is a deficient number, since it is larger than the sum of its proper divisors (139092022).

213140906 is a wasteful number, since it uses less digits than its factorization.

213140906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96037.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 213140906 is about 14599.3460812462. The cubic root of 213140906 is about 597.3409236713.

The spelling of 213140906 in words is "two hundred thirteen million, one hundred forty thousand, nine hundred six".