202112231 has 4 divisors (see below), whose sum is σ = 202180872. Its totient is φ = 202043592.

The previous prime is 202112227. The next prime is 202112249. The reversal of 202112231 is 132211202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132211202 = 2 ⋅66105601.

It is a cyclic number.

It is not a de Polignac number, because 202112231 - 2² = 202112227 is a prime.

It is a super-2 number, since 2×202112231² = 81698707839594722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202612231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29696 + ... + 35861.

It is an arithmetic number, because the mean of its divisors is an integer number (50545218).

Almost surely, 2^202112231 is an apocalyptic number.

202112231 is a deficient number, since it is larger than the sum of its proper divisors (68641).

202112231 is an equidigital number, since it uses as much as digits as its factorization.

202112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68640.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 202112231 is about 14216.6181280922. The cubic root of 202112231 is about 586.8550759711.

Adding to 202112231 its reverse (132211202), we get a palindrome (334323433).

The spelling of 202112231 in words is "two hundred two million, one hundred twelve thousand, two hundred thirty-one".