203112202431 has 4 divisors (see below), whose sum is σ = 270816269912. Its totient is φ = 135408134952.

The previous prime is 203112202417. The next prime is 203112202441. The reversal of 203112202431 is 134202211302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 203112202431 - 2⁶ = 203112202367 is a prime.

It is a super-2 number, since 2×203112202431² (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 = 203112202398 and 203112202407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203112202441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33852033736 + ... + 33852033741.

It is an arithmetic number, because the mean of its divisors is an integer number (67704067478).

Almost surely, 2^203112202431 is an apocalyptic number.

203112202431 is a deficient number, since it is larger than the sum of its proper divisors (67704067481).

203112202431 is an equidigital number, since it uses as much as digits as its factorization.

203112202431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67704067480.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 203112202431 its reverse (134202211302), we get a palindrome (337314413733).

The spelling of 203112202431 in words is "two hundred three billion, one hundred twelve million, two hundred two thousand, four hundred thirty-one".