131112646 has 8 divisors (see below), whose sum is σ = 224764560. Its totient is φ = 56191128.

The previous prime is 131112637. The next prime is 131112649. The reversal of 131112646 is 646211131.

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

It is a super-2 number, since 2×131112646² = 34381051882242632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131112646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131112649) 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, 4682581 + ... + 4682608.

It is an arithmetic number, because the mean of its divisors is an integer number (28095570).

Almost surely, 2^131112646 is an apocalyptic number.

131112646 is a deficient number, since it is larger than the sum of its proper divisors (93651914).

131112646 is an equidigital number, since it uses as much as digits as its factorization.

131112646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9365198.

The product of its digits is 864, while the sum is 25.

The square root of 131112646 is about 11450.4430481969. The cubic root of 131112646 is about 508.0208389368.

Adding to 131112646 its reverse (646211131), we get a palindrome (777323777).

The spelling of 131112646 in words is "one hundred thirty-one million, one hundred twelve thousand, six hundred forty-six".