312115255 has 16 divisors (see below), whose sum is σ = 391093920. Its totient is φ = 238817152.

The previous prime is 312115253. The next prime is 312115273. The reversal of 312115255 is 552511213.

It is not a de Polignac number, because 312115255 - 2¹ = 312115253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312115253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5457 + ... + 25573.

It is an arithmetic number, because the mean of its divisors is an integer number (24443370).

Almost surely, 2^312115255 is an apocalyptic number.

312115255 is a deficient number, since it is larger than the sum of its proper divisors (78978665).

312115255 is a wasteful number, since it uses less digits than its factorization.

312115255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20258.

The product of its digits is 1500, while the sum is 25.

The square root of 312115255 is about 17666.7839461516. The cubic root of 312115255 is about 678.3257941491.

Adding to 312115255 its reverse (552511213), we get a palindrome (864626468).

The spelling of 312115255 in words is "three hundred twelve million, one hundred fifteen thousand, two hundred fifty-five".