255431403 has 12 divisors (see below), whose sum is σ = 374464168. Its totient is φ = 167745600.

The previous prime is 255431369. The next prime is 255431419. The reversal of 255431403 is 304134552.

255431403 is a `hidden beast` number, since 255 + 4 + 3 + 1 + 403 = 666.

It is not a de Polignac number, because 255431403 - 2¹⁰ = 255430379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255431203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211198 + ... + 212403.

Almost surely, 2^255431403 is an apocalyptic number.

255431403 is a deficient number, since it is larger than the sum of its proper divisors (119032765).

255431403 is a wasteful number, since it uses less digits than its factorization.

255431403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423674 (or 423671 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 255431403 is about 15982.2214663669. The cubic root of 255431403 is about 634.4899725868.

Adding to 255431403 its reverse (304134552), we get a palindrome (559565955).

The spelling of 255431403 in words is "two hundred fifty-five million, four hundred thirty-one thousand, four hundred three".