131261112 has 48 divisors (see below), whose sum is σ = 363774840. Its totient is φ = 42735168.

The previous prime is 131261111. The next prime is 131261147. The reversal of 131261112 is 211162131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131261111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18103 + ... + 24294.

Almost surely, 2^131261112 is an apocalyptic number.

131261112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131261112 is an abundant number, since it is smaller than the sum of its proper divisors (232513728).

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

131261112 is a wasteful number, since it uses less digits than its factorization.

131261112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42452 (or 42445 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 131261112 is about 11456.9241945646. The cubic root of 131261112 is about 508.2125198393.

The spelling of 131261112 in words is "one hundred thirty-one million, two hundred sixty-one thousand, one hundred twelve".