213738111 has 6 divisors (see below), whose sum is σ = 308732840. Its totient is φ = 142492068.

The previous prime is 213738101. The next prime is 213738131. The reversal of 213738111 is 111837312.

It is a happy number.

It is not a de Polignac number, because 213738111 - 2⁷ = 213737983 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 (213738101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11874331 + ... + 11874348.

Almost surely, 2^213738111 is an apocalyptic number.

213738111 is a deficient number, since it is larger than the sum of its proper divisors (94994729).

213738111 is a wasteful number, since it uses less digits than its factorization.

213738111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23748685 (or 23748682 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 213738111 is about 14619.7849163385. The cubic root of 213738111 is about 597.8983050597.

The spelling of 213738111 in words is "two hundred thirteen million, seven hundred thirty-eight thousand, one hundred eleven".