203431427 has 2 divisors, whose sum is σ = 203431428. Its totient is φ = 203431426.

The previous prime is 203431421. The next prime is 203431447. The reversal of 203431427 is 724134302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203431427 - 2⁴ = 203431411 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 203431396 and 203431405.

It is not a weakly prime, because it can be changed into another prime (203431421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101715713 + 101715714.

It is an arithmetic number, because the mean of its divisors is an integer number (101715714).

Almost surely, 2^203431427 is an apocalyptic number.

203431427 is a deficient number, since it is larger than the sum of its proper divisors (1).

203431427 is an equidigital number, since it uses as much as digits as its factorization.

203431427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 203431427 is about 14262.9389327726. The cubic root of 203431427 is about 588.1291182583.

Adding to 203431427 its reverse (724134302), we get a palindrome (927565729).

The spelling of 203431427 in words is "two hundred three million, four hundred thirty-one thousand, four hundred twenty-seven".