312215651055 has 96 divisors (see below), whose sum is σ = 677607690240. Its totient is φ = 129194749440.

The previous prime is 312215651023. The next prime is 312215651089. The reversal of 312215651055 is 550156512213.

312215651055 is a `hidden beast` number, since 3 + 12 + 21 + 565 + 10 + 55 = 666.

It is not a de Polignac number, because 312215651055 - 2⁵ = 312215651023 is a prime.

It is a super-2 number, since 2×312215651055² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 613986 + ... + 1000704.

It is an arithmetic number, because the mean of its divisors is an integer number (7058413440).

Almost surely, 2^312215651055 is an apocalyptic number.

312215651055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

312215651055 is an abundant number, since it is smaller than the sum of its proper divisors (365392039185).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312215651055 is a wasteful number, since it uses less digits than its factorization.

312215651055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386981 (or 386978 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 312215651055 in words is "three hundred twelve billion, two hundred fifteen million, six hundred fifty-one thousand, fifty-five".