111331145513 has 16 divisors (see below), whose sum is σ = 132174685440. Its totient is φ = 91787942400.

The previous prime is 111331145507. The next prime is 111331145531. The reversal of 111331145513 is 315541133111.

It is not a de Polignac number, because 111331145513 - 2¹⁸ = 111330883369 is a prime.

It is a super-2 number, since 2×111331145513² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111331145713) 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 15 ways as a sum of consecutive naturals, for example, 2711408 + ... + 2752161.

It is an arithmetic number, because the mean of its divisors is an integer number (8260917840).

Almost surely, 2^111331145513 is an apocalyptic number.

It is an amenable number.

111331145513 is a deficient number, since it is larger than the sum of its proper divisors (20843539927).

111331145513 is an equidigital number, since it uses as much as digits as its factorization.

111331145513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5463688.

The product of its digits is 2700, while the sum is 29.

Adding to 111331145513 its reverse (315541133111), we get a palindrome (426872278624).

The spelling of 111331145513 in words is "one hundred eleven billion, three hundred thirty-one million, one hundred forty-five thousand, five hundred thirteen".