200111431 has 16 divisors (see below), whose sum is σ = 225570240. Its totient is φ = 176140800.

The previous prime is 200111419. The next prime is 200111453. The reversal of 200111431 is 134111002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200111431 is a prime.

It is a super-2 number, since 2×200111431² = 80089169633735522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200111491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119065 + ... + 120733.

It is an arithmetic number, because the mean of its divisors is an integer number (14098140).

Almost surely, 2^200111431 is an apocalyptic number.

200111431 is a deficient number, since it is larger than the sum of its proper divisors (25458809).

200111431 is a wasteful number, since it uses less digits than its factorization.

200111431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 200111431 is about 14146.0747559173. The cubic root of 200111431 is about 584.9121362184.

Adding to 200111431 its reverse (134111002), we get a palindrome (334222433).

The spelling of 200111431 in words is "two hundred million, one hundred eleven thousand, four hundred thirty-one".