203431452857 has 2 divisors, whose sum is σ = 203431452858. Its totient is φ = 203431452856.

The previous prime is 203431452841. The next prime is 203431452859. The reversal of 203431452857 is 758254134302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193216510096 + 10214942761 = 439564^2 + 101069^2 .

It is a cyclic number.

It is not a de Polignac number, because 203431452857 - 2⁴ = 203431452841 is a prime.

Together with 203431452859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203431452859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101715726428 + 101715726429.

It is an arithmetic number, because the mean of its divisors is an integer number (101715726429).

Almost surely, 2^203431452857 is an apocalyptic number.

It is an amenable number.

203431452857 is a deficient number, since it is larger than the sum of its proper divisors (1).

203431452857 is an equidigital number, since it uses as much as digits as its factorization.

203431452857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 203431452857 in words is "two hundred three billion, four hundred thirty-one million, four hundred fifty-two thousand, eight hundred fifty-seven".