213401111 has 32 divisors (see below), whose sum is σ = 277102080. Its totient is φ = 159465600.

The previous prime is 213401101. The next prime is 213401113. The reversal of 213401111 is 111104312.

It is not a de Polignac number, because 213401111 - 2¹⁰ = 213400087 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 (213401113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506681 + ... + 507101.

It is an arithmetic number, because the mean of its divisors is an integer number (8659440).

Almost surely, 2^213401111 is an apocalyptic number.

213401111 is a deficient number, since it is larger than the sum of its proper divisors (63700969).

213401111 is a wasteful number, since it uses less digits than its factorization.

213401111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 213401111 is about 14608.2548923545. The cubic root of 213401111 is about 597.5839051651.

Adding to 213401111 its reverse (111104312), we get a palindrome (324505423).

The spelling of 213401111 in words is "two hundred thirteen million, four hundred one thousand, one hundred eleven".