316211555161 has 4 divisors (see below), whose sum is σ = 316259742672. Its totient is φ = 316163367652.

The previous prime is 316211555137. The next prime is 316211555173. The reversal of 316211555161 is 161555112613.

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 not a de Polignac number, because 316211555161 - 2¹³ = 316211546969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 316211555161.

It is not an unprimeable number, because it can be changed into a prime (316211555131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24083911 + ... + 24097036.

It is an arithmetic number, because the mean of its divisors is an integer number (79064935668).

Almost surely, 2^316211555161 is an apocalyptic number.

It is an amenable number.

316211555161 is a deficient number, since it is larger than the sum of its proper divisors (48187511).

316211555161 is an equidigital number, since it uses as much as digits as its factorization.

316211555161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48187510.

The product of its digits is 27000, while the sum is 37.

Adding to 316211555161 its reverse (161555112613), we get a palindrome (477766667774).

The spelling of 316211555161 in words is "three hundred sixteen billion, two hundred eleven million, five hundred fifty-five thousand, one hundred sixty-one".