312277077905 has 8 divisors (see below), whose sum is σ = 403558069992. Its totient is φ = 230604611328.

The previous prime is 312277077859. The next prime is 312277077907. The reversal of 312277077905 is 509770772213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 68627233024 + 243649844881 = 261968^2 + 493609^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312277077905 - 2¹² = 312277073809 is a prime.

It is a super-4 number, since 4×312277077905⁴ (a number of 47 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312277077907) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2402131304 + ... + 2402131433.

It is an arithmetic number, because the mean of its divisors is an integer number (50444758749).

Almost surely, 2^312277077905 is an apocalyptic number.

It is an amenable number.

312277077905 is a deficient number, since it is larger than the sum of its proper divisors (91280992087).

312277077905 is a wasteful number, since it uses less digits than its factorization.

312277077905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4804262755.

The product of its (nonzero) digits is 1296540, while the sum is 50.

The spelling of 312277077905 in words is "three hundred twelve billion, two hundred seventy-seven million, seventy-seven thousand, nine hundred five".