1200312255 has 8 divisors (see below), whose sum is σ = 1920499632. Its totient is φ = 640166528.

The previous prime is 1200312229. The next prime is 1200312271. The reversal of 1200312255 is 5522130021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200312255 - 2⁹ = 1200311743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40010394 + ... + 40010423.

It is an arithmetic number, because the mean of its divisors is an integer number (240062454).

Almost surely, 2^1200312255 is an apocalyptic number.

1200312255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1200312255 is a deficient number, since it is larger than the sum of its proper divisors (720187377).

1200312255 is an equidigital number, since it uses as much as digits as its factorization.

1200312255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80020825.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1200312255 is about 34645.5228709281. The cubic root of 1200312255 is about 1062.7507335366.

Adding to 1200312255 its reverse (5522130021), we get a palindrome (6722442276).

The spelling of 1200312255 in words is "one billion, two hundred million, three hundred twelve thousand, two hundred fifty-five".