312111440345 has 8 divisors (see below), whose sum is σ = 374626070664. Its totient is φ = 249627590784.

The previous prime is 312111440299. The next prime is 312111440363. The reversal of 312111440345 is 543044111213.

It can be written as a sum of positive squares in 4 ways, for example, as 197009296 + 311914431049 = 14036^2 + 558493^2 .

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 312111440345 - 2¹⁴ = 312111423961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7672874 + ... + 7713443.

It is an arithmetic number, because the mean of its divisors is an integer number (46828258833).

Almost surely, 2^312111440345 is an apocalyptic number.

It is an amenable number.

312111440345 is a deficient number, since it is larger than the sum of its proper divisors (62514630319).

312111440345 is a wasteful number, since it uses less digits than its factorization.

312111440345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15390379.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 312111440345 its reverse (543044111213), we get a palindrome (855155551558).

The spelling of 312111440345 in words is "three hundred twelve billion, one hundred eleven million, four hundred forty thousand, three hundred forty-five".