213149611 has 8 divisors (see below), whose sum is σ = 218673504. Its totient is φ = 207641280.

The previous prime is 213149603. The next prime is 213149633. The reversal of 213149611 is 116941312.

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 213149611 - 2³ = 213149603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213149611.

It is not an unprimeable number, because it can be changed into a prime (213149641) 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, 26965 + ... + 33961.

It is an arithmetic number, because the mean of its divisors is an integer number (27334188).

Almost surely, 2^213149611 is an apocalyptic number.

213149611 is a deficient number, since it is larger than the sum of its proper divisors (5523893).

213149611 is an equidigital number, since it uses as much as digits as its factorization.

213149611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7781.

The product of its digits is 1296, while the sum is 28.

The square root of 213149611 is about 14599.6442079936. The cubic root of 213149611 is about 597.3490556657.

The spelling of 213149611 in words is "two hundred thirteen million, one hundred forty-nine thousand, six hundred eleven".