203134212431 has 4 divisors (see below), whose sum is σ = 203135282952. Its totient is φ = 203133141912.

The previous prime is 203134212419. The next prime is 203134212451. The reversal of 203134212431 is 134212431302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 134212431302 = 2 ⋅67106215651.

It is a cyclic number.

It is not a de Polignac number, because 203134212431 - 2¹⁸ = 203133950287 is a prime.

It is a super-2 number, since 2×203134212431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203134212431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203134212451) 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, 165476 + ... + 658521.

It is an arithmetic number, because the mean of its divisors is an integer number (50783820738).

Almost surely, 2^203134212431 is an apocalyptic number.

203134212431 is a deficient number, since it is larger than the sum of its proper divisors (1070521).

203134212431 is an equidigital number, since it uses as much as digits as its factorization.

203134212431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070520.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 203134212431 its reverse (134212431302), we get a palindrome (337346643733).

The spelling of 203134212431 in words is "two hundred three billion, one hundred thirty-four million, two hundred twelve thousand, four hundred thirty-one".