203204100431 has 4 divisors (see below), whose sum is σ = 203471123664. Its totient is φ = 202937077200.

The previous prime is 203204100419. The next prime is 203204100481. The reversal of 203204100431 is 134001402302.

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

It is a cyclic number.

It is not a de Polignac number, because 203204100431 - 2¹⁰ = 203204099407 is a prime.

It is a super-2 number, since 2×203204100431² (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 (203204100481) 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, 133510475 + ... + 133511996.

It is an arithmetic number, because the mean of its divisors is an integer number (50867780916).

Almost surely, 2^203204100431 is an apocalyptic number.

203204100431 is a deficient number, since it is larger than the sum of its proper divisors (267023233).

203204100431 is an equidigital number, since it uses as much as digits as its factorization.

203204100431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267023232.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203204100431 its reverse (134001402302), we get a palindrome (337205502733).

The spelling of 203204100431 in words is "two hundred three billion, two hundred four million, one hundred thousand, four hundred thirty-one".