312217502472 has 36 divisors (see below), whose sum is σ = 845601910335. Its totient is φ = 104070920400.

The previous prime is 312217502459. The next prime is 312217502477. The reversal of 312217502472 is 274205712213.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

312217502472 is a `hidden beast` number, since 3 + 12 + 2 + 175 + 0 + 2 + 472 = 666.

It can be written as a sum of positive squares in only one way, i.e., 156108751236 + 156108751236 = 395106^2 + 395106^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=395106.

It is a super-2 number, since 2×312217502472² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (312217502477) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4708347 + ... + 4774197.

Almost surely, 2^312217502472 is an apocalyptic number.

It is an amenable number.

312217502472 is an abundant number, since it is smaller than the sum of its proper divisors (533384407863).

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

312217502472 is an frugal number, since it uses more digits than its factorization.

312217502472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131714 (or 65856 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 312217502472 in words is "three hundred twelve billion, two hundred seventeen million, five hundred two thousand, four hundred seventy-two".