203431423432 has 32 divisors (see below), whose sum is σ = 388955348280. Its totient is φ = 99713203200.

The previous prime is 203431423373. The next prime is 203431423439. The reversal of 203431423432 is 234324134302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 123323178276 + 80108245156 = 351174^2 + 283034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203431423394 and 203431423403.

It is not an unprimeable number, because it can be changed into a prime (203431423439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309478 + ... + 708970.

Almost surely, 2^203431423432 is an apocalyptic number.

It is an amenable number.

203431423432 is a deficient number, since it is larger than the sum of its proper divisors (185523924848).

203431423432 is a wasteful number, since it uses less digits than its factorization.

203431423432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400753 (or 400749 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 203431423432 its reverse (234324134302), we get a palindrome (437755557734).

The spelling of 203431423432 in words is "two hundred three billion, four hundred thirty-one million, four hundred twenty-three thousand, four hundred thirty-two".