312131055 has 8 divisors (see below), whose sum is σ = 499409712. Its totient is φ = 166469888.

The previous prime is 312131047. The next prime is 312131087. The reversal of 312131055 is 550131213.

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 312131055 - 2³ = 312131047 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10404354 + ... + 10404383.

It is an arithmetic number, because the mean of its divisors is an integer number (62426214).

Almost surely, 2^312131055 is an apocalyptic number.

312131055 is a deficient number, since it is larger than the sum of its proper divisors (187278657).

312131055 is a wasteful number, since it uses less digits than its factorization.

312131055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20808745.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 312131055 is about 17667.2311073354. The cubic root of 312131055 is about 678.3372400990.

Adding to 312131055 its reverse (550131213), we get a palindrome (862262268).

The spelling of 312131055 in words is "three hundred twelve million, one hundred thirty-one thousand, fifty-five".