255344431 has 4 divisors (see below), whose sum is σ = 255846600. Its totient is φ = 254842264.

The previous prime is 255344387. The next prime is 255344447. The reversal of 255344431 is 134443552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255344431 - 2²³ = 246955823 is a prime.

It is a super-2 number, since 2×255344431² = 130401556885427522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255344393 and 255344402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255344731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250321 + ... + 251338.

It is an arithmetic number, because the mean of its divisors is an integer number (63961650).

Almost surely, 2^255344431 is an apocalyptic number.

255344431 is a deficient number, since it is larger than the sum of its proper divisors (502169).

255344431 is an equidigital number, since it uses as much as digits as its factorization.

255344431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502168.

The product of its digits is 28800, while the sum is 31.

The square root of 255344431 is about 15979.5003363685. The cubic root of 255344431 is about 634.4179517813.

Adding to 255344431 its reverse (134443552), we get a palindrome (389787983).

The spelling of 255344431 in words is "two hundred fifty-five million, three hundred forty-four thousand, four hundred thirty-one".