311043512145 has 32 divisors (see below), whose sum is σ = 527005664640. Its totient is φ = 156113464320.

The previous prime is 311043512141. The next prime is 311043512161. The reversal of 311043512145 is 541215340113.

It is not a de Polignac number, because 311043512145 - 2² = 311043512141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311043512141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2274726 + ... + 2407584.

It is an arithmetic number, because the mean of its divisors is an integer number (16468927020).

Almost surely, 2^311043512145 is an apocalyptic number.

It is an amenable number.

311043512145 is a deficient number, since it is larger than the sum of its proper divisors (215962152495).

311043512145 is a wasteful number, since it uses less digits than its factorization.

311043512145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142065.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 311043512145 its reverse (541215340113), we get a palindrome (852258852258).

The spelling of 311043512145 in words is "three hundred eleven billion, forty-three million, five hundred twelve thousand, one hundred forty-five".