231200311 has 4 divisors (see below), whose sum is σ = 232584912. Its totient is φ = 229815712.

The previous prime is 231200287. The next prime is 231200327. The reversal of 231200311 is 113002132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231200311 - 2⁵ = 231200279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231200291 and 231200300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231240311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692050 + ... + 692383.

It is an arithmetic number, because the mean of its divisors is an integer number (58146228).

Almost surely, 2^231200311 is an apocalyptic number.

231200311 is a deficient number, since it is larger than the sum of its proper divisors (1384601).

231200311 is a wasteful number, since it uses less digits than its factorization.

231200311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384600.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 231200311 is about 15205.2724737178. The cubic root of 231200311 is about 613.7565472317.

Adding to 231200311 its reverse (113002132), we get a palindrome (344202443).

The spelling of 231200311 in words is "two hundred thirty-one million, two hundred thousand, three hundred eleven".