203112133231 has 16 divisors (see below), whose sum is σ = 245795420160. Its totient is φ = 163846719360.

The previous prime is 203112133223. The next prime is 203112133247. The reversal of 203112133231 is 132331211302.

It is a cyclic number.

It is not a de Polignac number, because 203112133231 - 2³ = 203112133223 is a prime.

It is a super-2 number, since 2×203112133231² (a number of 23 digits) 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 (203112133531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3406090 + ... + 3465208.

It is an arithmetic number, because the mean of its divisors is an integer number (15362213760).

Almost surely, 2^203112133231 is an apocalyptic number.

203112133231 is a deficient number, since it is larger than the sum of its proper divisors (42683286929).

203112133231 is a wasteful number, since it uses less digits than its factorization.

203112133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88014.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 203112133231 its reverse (132331211302), we get a palindrome (335443344533).

The spelling of 203112133231 in words is "two hundred three billion, one hundred twelve million, one hundred thirty-three thousand, two hundred thirty-one".