112005312131 has 4 divisors (see below), whose sum is σ = 112062723264. Its totient is φ = 111947901000.

The previous prime is 112005312127. The next prime is 112005312137. The reversal of 112005312131 is 131213500211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 112005312131 - 2² = 112005312127 is a prime.

It is a super-2 number, since 2×112005312131² (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 (112005312137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28702640 + ... + 28706541.

It is an arithmetic number, because the mean of its divisors is an integer number (28015680816).

Almost surely, 2^112005312131 is an apocalyptic number.

112005312131 is a deficient number, since it is larger than the sum of its proper divisors (57411133).

112005312131 is an equidigital number, since it uses as much as digits as its factorization.

112005312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57411132.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 112005312131 its reverse (131213500211), we get a palindrome (243218812342).

The spelling of 112005312131 in words is "one hundred twelve billion, five million, three hundred twelve thousand, one hundred thirty-one".