111000013131 has 16 divisors (see below), whose sum is σ = 170817562368. Its totient is φ = 62800572000.

The previous prime is 111000013123. The next prime is 111000013133. The reversal of 111000013131 is 131310000111.

It is not a de Polignac number, because 111000013131 - 2³ = 111000013123 is a prime.

It is a super-2 number, since 2×111000013131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111000013133) 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 15 ways as a sum of consecutive naturals, for example, 26164785 + ... + 26169026.

It is an arithmetic number, because the mean of its divisors is an integer number (10676097648).

Almost surely, 2^111000013131 is an apocalyptic number.

111000013131 is a deficient number, since it is larger than the sum of its proper divisors (59817549237).

111000013131 is a wasteful number, since it uses less digits than its factorization.

111000013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52333922.

The product of its (nonzero) digits is 9, while the sum is 12.

Adding to 111000013131 its reverse (131310000111), we get a palindrome (242310013242).

The spelling of 111000013131 in words is "one hundred eleven billion, thirteen thousand, one hundred thirty-one".