111143115554031 has 96 divisors (see below), whose sum is σ = 180789491660544. Its totient is φ = 65222521920000.

The previous prime is 111143115554021. The next prime is 111143115554063. The reversal of 111143115554031 is 130455511341111.

111143115554031 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 4 + 31 + 1 + 55 + 540 + 31 = 666.

It is not a de Polignac number, because 111143115554031 - 2¹⁰ = 111143115553007 is a prime.

It is a super-2 number, since 2×111143115554031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111143115554011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 230321956 + ... + 230804006.

It is an arithmetic number, because the mean of its divisors is an integer number (1883223871464).

Almost surely, 2^{111143115554031} is an apocalyptic number.

111143115554031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111143115554031 is a deficient number, since it is larger than the sum of its proper divisors (69646376106513).

111143115554031 is a wasteful number, since it uses less digits than its factorization.

111143115554031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482725 (or 482722 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

Adding to 111143115554031 its reverse (130455511341111), we get a palindrome (241598626895142).

The spelling of 111143115554031 in words is "one hundred eleven trillion, one hundred forty-three billion, one hundred fifteen million, five hundred fifty-four thousand, thirty-one".