312253305173617 has 4 divisors (see below), whose sum is σ = 330621146654436. Its totient is φ = 293885463692800.

The previous prime is 312253305173603. The next prime is 312253305173671. The reversal of 312253305173617 is 716371503352213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 194014561645921 + 118238743527696 = 13928911^2 + 10873764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312253305173617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312253305173417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9183920740384 + ... + 9183920740417.

It is an arithmetic number, because the mean of its divisors is an integer number (82655286663609).

Almost surely, 2^{312253305173617} is an apocalyptic number.

It is an amenable number.

312253305173617 is a deficient number, since it is larger than the sum of its proper divisors (18367841480819).

312253305173617 is a wasteful number, since it uses less digits than its factorization.

312253305173617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18367841480818.

The product of its (nonzero) digits is 2381400, while the sum is 49.

The spelling of 312253305173617 in words is "three hundred twelve trillion, two hundred fifty-three billion, three hundred five million, one hundred seventy-three thousand, six hundred seventeen".