131112277 has 4 divisors (see below), whose sum is σ = 135633420. Its totient is φ = 126591136.

The previous prime is 131112253. The next prime is 131112283. The reversal of 131112277 is 772211131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38452401 + 92659876 = 6201^2 + 9626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131112277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131112227) 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, 2260528 + ... + 2260585.

It is an arithmetic number, because the mean of its divisors is an integer number (33908355).

Almost surely, 2^131112277 is an apocalyptic number.

It is an amenable number.

131112277 is a deficient number, since it is larger than the sum of its proper divisors (4521143).

131112277 is an equidigital number, since it uses as much as digits as its factorization.

131112277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4521142.

The product of its digits is 588, while the sum is 25.

The square root of 131112277 is about 11450.4269352719. The cubic root of 131112277 is about 508.0203623495.

The spelling of 131112277 in words is "one hundred thirty-one million, one hundred twelve thousand, two hundred seventy-seven".