311642317849 has 8 divisors (see below), whose sum is σ = 318040375752. Its totient is φ = 305263445760.

The previous prime is 311642317801. The next prime is 311642317871. The reversal of 311642317849 is 948713246113.

It can be written as a sum of positive squares in 4 ways, for example, as 23702757849 + 287939560000 = 153957^2 + 536600^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 311642317849 - 2¹⁵ = 311642285081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311642317549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4763632 + ... + 4828609.

It is an arithmetic number, because the mean of its divisors is an integer number (39755046969).

Almost surely, 2^311642317849 is an apocalyptic number.

It is an amenable number.

311642317849 is a deficient number, since it is larger than the sum of its proper divisors (6398057903).

311642317849 is an equidigital number, since it uses as much as digits as its factorization.

311642317849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9592907.

The product of its digits is 870912, while the sum is 49.

The spelling of 311642317849 in words is "three hundred eleven billion, six hundred forty-two million, three hundred seventeen thousand, eight hundred forty-nine".