255212431 has 4 divisors (see below), whose sum is σ = 255247200. Its totient is φ = 255177664.

The previous prime is 255212417. The next prime is 255212443. The reversal of 255212431 is 134212552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255212431 is a prime.

It is a super-2 number, since 2×255212431² = 130266769873859522, 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 = 255212396 and 255212405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255212131) 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, 1591 + ... + 22648.

It is an arithmetic number, because the mean of its divisors is an integer number (63811800).

Almost surely, 2^255212431 is an apocalyptic number.

255212431 is a deficient number, since it is larger than the sum of its proper divisors (34769).

255212431 is a wasteful number, since it uses less digits than its factorization.

255212431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34768.

The product of its digits is 2400, while the sum is 25.

The square root of 255212431 is about 15975.3695105935. The cubic root of 255212431 is about 634.3086124029.

Adding to 255212431 its reverse (134212552), we get a palindrome (389424983).

The spelling of 255212431 in words is "two hundred fifty-five million, two hundred twelve thousand, four hundred thirty-one".