203131333323231 has 16 divisors (see below), whose sum is σ = 278187260575584. Its totient is φ = 131748816812544.

The previous prime is 203131333323209. The next prime is 203131333323263. The reversal of 203131333323231 is 132323333131302.

It is not a de Polignac number, because 203131333323231 - 2⁶ = 203131333323167 is a prime.

It is a super-2 number, since 2×203131333323231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203131333323192 and 203131333323201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203131333323271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82447510 + ... + 84875523.

It is an arithmetic number, because the mean of its divisors is an integer number (17386703785974).

Almost surely, 2^{203131333323231} is an apocalyptic number.

203131333323231 is a deficient number, since it is larger than the sum of its proper divisors (75055927252353).

203131333323231 is a wasteful number, since it uses less digits than its factorization.

203131333323231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167334010.

The product of its (nonzero) digits is 52488, while the sum is 33.

Adding to 203131333323231 its reverse (132323333131302), we get a palindrome (335454666454533).

The spelling of 203131333323231 in words is "two hundred three trillion, one hundred thirty-one billion, three hundred thirty-three million, three hundred twenty-three thousand, two hundred thirty-one".