203312450431 has 4 divisors (see below), whose sum is σ = 203319582664. Its totient is φ = 203305318200.

The previous prime is 203312450401. The next prime is 203312450443. The reversal of 203312450431 is 134054213302.

It is a happy number.

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 203312450431 - 2⁷ = 203312450303 is a prime.

It is a super-2 number, since 2×203312450431² (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 203312450431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203312450401) 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, 3523185 + ... + 3580426.

It is an arithmetic number, because the mean of its divisors is an integer number (50829895666).

Almost surely, 2^203312450431 is an apocalyptic number.

203312450431 is a deficient number, since it is larger than the sum of its proper divisors (7132233).

203312450431 is an equidigital number, since it uses as much as digits as its factorization.

203312450431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132232.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 203312450431 its reverse (134054213302), we get a palindrome (337366663733).

The spelling of 203312450431 in words is "two hundred three billion, three hundred twelve million, four hundred fifty thousand, four hundred thirty-one".