111742273531 has 8 divisors (see below), whose sum is σ = 127753074944. Its totient is φ = 95743377000.

The previous prime is 111742273519. The next prime is 111742273543. The reversal of 111742273531 is 135372247111.

It is an interprime number because it is at equal distance from previous prime (111742273519) and next prime (111742273543).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111742273531 - 2¹¹ = 111742271483 is a prime.

It is a super-2 number, since 2×111742273531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111742273631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2956095 + ... + 2993656.

It is an arithmetic number, because the mean of its divisors is an integer number (15969134368).

Almost surely, 2^111742273531 is an apocalyptic number.

111742273531 is a deficient number, since it is larger than the sum of its proper divisors (16010801413).

111742273531 is an equidigital number, since it uses as much as digits as its factorization.

111742273531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952441.

The product of its digits is 35280, while the sum is 37.

The spelling of 111742273531 in words is "one hundred eleven billion, seven hundred forty-two million, two hundred seventy-three thousand, five hundred thirty-one".