255430431 has 24 divisors (see below), whose sum is σ = 376834640. Its totient is φ = 166686336.

The previous prime is 255430393. The next prime is 255430459. The reversal of 255430431 is 134034552.

It is not a de Polignac number, because 255430431 - 2⁶ = 255430367 is a prime.

It is a super-2 number, since 2×255430431² = 130489410161691522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 255430395 and 255430404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255430031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89925 + ... + 92721.

Almost surely, 2^255430431 is an apocalyptic number.

255430431 is a deficient number, since it is larger than the sum of its proper divisors (121404209).

255430431 is a wasteful number, since it uses less digits than its factorization.

255430431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015 (or 3012 counting only the distinct ones).

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

The square root of 255430431 is about 15982.1910575490. The cubic root of 255430431 is about 634.4891677718.

Adding to 255430431 its reverse (134034552), we get a palindrome (389464983).

The spelling of 255430431 in words is "two hundred fifty-five million, four hundred thirty thousand, four hundred thirty-one".