203120112331 has 4 divisors (see below), whose sum is σ = 203121083992. Its totient is φ = 203119140672.

The previous prime is 203120112329. The next prime is 203120112353. The reversal of 203120112331 is 133211021302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203120112331 - 2¹ = 203120112329 is a prime.

It is a super-2 number, since 2×203120112331² (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 = 203120112299 and 203120112308.

It is not an unprimeable number, because it can be changed into a prime (203120112361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29205 + ... + 638038.

It is an arithmetic number, because the mean of its divisors is an integer number (50780270998).

Almost surely, 2^203120112331 is an apocalyptic number.

203120112331 is a deficient number, since it is larger than the sum of its proper divisors (971661).

203120112331 is an equidigital number, since it uses as much as digits as its factorization.

203120112331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971660.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203120112331 its reverse (133211021302), we get a palindrome (336331133633).

The spelling of 203120112331 in words is "two hundred three billion, one hundred twenty million, one hundred twelve thousand, three hundred thirty-one".