312154244647 has 32 divisors (see below), whose sum is σ = 385060552704. Its totient is φ = 246973977600.

The previous prime is 312154244641. The next prime is 312154244657. The reversal of 312154244647 is 746442451213.

It is a happy number.

It is not a de Polignac number, because 312154244647 - 2¹⁵ = 312154211879 is a prime.

It is a super-2 number, since 2×312154244647² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312154244641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1517043 + ... + 1710475.

It is an arithmetic number, because the mean of its divisors is an integer number (12033142272).

Almost surely, 2^312154244647 is an apocalyptic number.

312154244647 is a deficient number, since it is larger than the sum of its proper divisors (72906308057).

312154244647 is a wasteful number, since it uses less digits than its factorization.

312154244647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193719.

The product of its digits is 645120, while the sum is 43.

The spelling of 312154244647 in words is "three hundred twelve billion, one hundred fifty-four million, two hundred forty-four thousand, six hundred forty-seven".