111231020313 has 80 divisors (see below), whose sum is σ = 200027520000. Its totient is φ = 60174366048.

The previous prime is 111231020273. The next prime is 111231020323. The reversal of 111231020313 is 313020132111.

111231020313 is a `hidden beast` number, since 11 + 12 + 310 + 20 + 313 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-111231020313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111231020323) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 22610068 + ... + 22614986.

It is an arithmetic number, because the mean of its divisors is an integer number (2500344000).

Almost surely, 2^111231020313 is an apocalyptic number.

It is an amenable number.

111231020313 is a deficient number, since it is larger than the sum of its proper divisors (88796499687).

111231020313 is a wasteful number, since it uses less digits than its factorization.

111231020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 111231020313 its reverse (313020132111), we get a palindrome (424251152424).

The spelling of 111231020313 in words is "one hundred eleven billion, two hundred thirty-one million, twenty thousand, three hundred thirteen".