111312131301 has 18 divisors (see below), whose sum is σ = 187034670342. Its totient is φ = 63606931920.

The previous prime is 111312131299. The next prime is 111312131321. The reversal of 111312131301 is 103131213111.

It can be written as a sum of positive squares in only one way, i.e., 63705255201 + 47606876100 = 252399^2 + 218190^2 .

It is not a de Polignac number, because 111312131301 - 2¹ = 111312131299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312131321) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 126203790 + ... + 126204671.

It is an arithmetic number, because the mean of its divisors is an integer number (10390815019).

Almost surely, 2^111312131301 is an apocalyptic number.

It is an amenable number.

111312131301 is a deficient number, since it is larger than the sum of its proper divisors (75722539041).

111312131301 is a wasteful number, since it uses less digits than its factorization.

111312131301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252408481 (or 252408471 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111312131301 its reverse (103131213111), we get a palindrome (214443344412).

The spelling of 111312131301 in words is "one hundred eleven billion, three hundred twelve million, one hundred thirty-one thousand, three hundred one".