131201112 has 64 divisors (see below), whose sum is σ = 385009920. Its totient is φ = 36471168.

The previous prime is 131201101. The next prime is 131201143. The reversal of 131201112 is 211102131.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4338 + ... + 16769.

It is an arithmetic number, because the mean of its divisors is an integer number (6015780).

Almost surely, 2^131201112 is an apocalyptic number.

131201112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131201112 is an abundant number, since it is smaller than the sum of its proper divisors (253808808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131201112 is a wasteful number, since it uses less digits than its factorization.

131201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21160 (or 21156 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 131201112 is about 11454.3053914238. The cubic root of 131201112 is about 508.1350726857.

Adding to 131201112 its reverse (211102131), we get a palindrome (342303243).

The spelling of 131201112 in words is "one hundred thirty-one million, two hundred one thousand, one hundred twelve".