131121112 has 32 divisors (see below), whose sum is σ = 249119280. Its totient is φ = 64696320.

The previous prime is 131121031. The next prime is 131121113. The reversal of 131121112 is 211121131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131121092 and 131121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251412 + ... + 251932.

Almost surely, 2^131121112 is an apocalyptic number.

It is an amenable number.

131121112 is a deficient number, since it is larger than the sum of its proper divisors (117998168).

131121112 is a wasteful number, since it uses less digits than its factorization.

131121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 879 counting only the distinct ones).

The product of its digits is 12, while the sum is 13.

The square root of 131121112 is about 11450.8127222481. The cubic root of 131121112 is about 508.0317730762.

Adding to 131121112 its reverse (211121131), we get a palindrome (342242243).

The spelling of 131121112 in words is "one hundred thirty-one million, one hundred twenty-one thousand, one hundred twelve".