202131112231 has 4 divisors (see below), whose sum is σ = 202284127264. Its totient is φ = 201978097200.

The previous prime is 202131112223. The next prime is 202131112243. The reversal of 202131112231 is 132211131202.

202131112231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 202131112231 - 2³ = 202131112223 is a prime.

It is a super-2 number, since 2×202131112231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202131112199 and 202131112208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202131112831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76505535 + ... + 76508176.

It is an arithmetic number, because the mean of its divisors is an integer number (50571031816).

Almost surely, 2^202131112231 is an apocalyptic number.

202131112231 is a deficient number, since it is larger than the sum of its proper divisors (153015033).

202131112231 is a wasteful number, since it uses less digits than its factorization.

202131112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153015032.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 202131112231 its reverse (132211131202), we get a palindrome (334342243433).

The spelling of 202131112231 in words is "two hundred two billion, one hundred thirty-one million, one hundred twelve thousand, two hundred thirty-one".