213141709 has 16 divisors (see below), whose sum is σ = 241473024. Its totient is φ = 186379200.

The previous prime is 213141701. The next prime is 213141727. The reversal of 213141709 is 907141312.

It is a cyclic number.

It is not a de Polignac number, because 213141709 - 2³ = 213141701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213141701) 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 15 ways as a sum of consecutive naturals, for example, 57187 + ... + 60799.

It is an arithmetic number, because the mean of its divisors is an integer number (15092064).

Almost surely, 2^213141709 is an apocalyptic number.

It is an amenable number.

213141709 is a deficient number, since it is larger than the sum of its proper divisors (28331315).

213141709 is a wasteful number, since it uses less digits than its factorization.

213141709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 213141709 is about 14599.3735824521. The cubic root of 213141709 is about 597.3416738232.

The spelling of 213141709 in words is "two hundred thirteen million, one hundred forty-one thousand, seven hundred nine".