312166654949 has 4 divisors (see below), whose sum is σ = 312363855936. Its totient is φ = 311969453964.

The previous prime is 312166654937. The next prime is 312166654997. The reversal of 312166654949 is 949456661213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312166654949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312166654894 and 312166654903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312166654909) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 98598119 + ... + 98601284.

It is an arithmetic number, because the mean of its divisors is an integer number (78090963984).

Almost surely, 2^312166654949 is an apocalyptic number.

It is an amenable number.

312166654949 is a deficient number, since it is larger than the sum of its proper divisors (197200987).

312166654949 is a wasteful number, since it uses less digits than its factorization.

312166654949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197200986.

The product of its digits is 8398080, while the sum is 56.

The spelling of 312166654949 in words is "three hundred twelve billion, one hundred sixty-six million, six hundred fifty-four thousand, nine hundred forty-nine".