255111431 has 4 divisors (see below), whose sum is σ = 263340864. Its totient is φ = 246882000.

The previous prime is 255111413. The next prime is 255111443. The reversal of 255111431 is 134111552.

255111431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 255111431 - 2²⁶ = 188002567 is a prime.

It is a super-2 number, since 2×255111431² = 130163684453735522, 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 = 255111397 and 255111406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255111481) 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, 4114670 + ... + 4114731.

It is an arithmetic number, because the mean of its divisors is an integer number (65835216).

Almost surely, 2^255111431 is an apocalyptic number.

255111431 is a deficient number, since it is larger than the sum of its proper divisors (8229433).

255111431 is an equidigital number, since it uses as much as digits as its factorization.

255111431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8229432.

The product of its digits is 600, while the sum is 23.

The square root of 255111431 is about 15972.2080815396. The cubic root of 255111431 is about 634.2249257493.

Adding to 255111431 its reverse (134111552), we get a palindrome (389222983).

The spelling of 255111431 in words is "two hundred fifty-five million, one hundred eleven thousand, four hundred thirty-one".