203431402 has 16 divisors (see below), whose sum is σ = 314332200. Its totient is φ = 98670528.

The previous prime is 203431379. The next prime is 203431411. The reversal of 203431402 is 204134302.

It can be written as a sum of positive squares in 4 ways, for example, as 192349161 + 11082241 = 13869^2 + 3329^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203431402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21888 + ... + 29764.

Almost surely, 2^203431402 is an apocalyptic number.

203431402 is a deficient number, since it is larger than the sum of its proper divisors (110900798).

203431402 is a wasteful number, since it uses less digits than its factorization.

203431402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8265.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 203431402 is about 14262.9380563753. The cubic root of 203431402 is about 588.1290941663.

Adding to 203431402 its reverse (204134302), we get a palindrome (407565704).

The spelling of 203431402 in words is "two hundred three million, four hundred thirty-one thousand, four hundred two".