112671981 has 12 divisors (see below), whose sum is σ = 163067580. Its totient is φ = 74967360.

The previous prime is 112671973. The next prime is 112672013. The reversal of 112671981 is 189176211.

It can be written as a sum of positive squares in 2 ways, for example, as 85266756 + 27405225 = 9234^2 + 5235^2 .

It is not a de Polignac number, because 112671981 - 2³ = 112671973 is a prime.

It is a super-2 number, since 2×112671981² = 25389950604928722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112671901) 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, 7326 + ... + 16703.

It is an arithmetic number, because the mean of its divisors is an integer number (13588965).

Almost surely, 2^112671981 is an apocalyptic number.

It is an amenable number.

112671981 is a deficient number, since it is larger than the sum of its proper divisors (50395599).

112671981 is a wasteful number, since it uses less digits than its factorization.

112671981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24556 (or 24553 counting only the distinct ones).

The product of its digits is 6048, while the sum is 36.

The square root of 112671981 is about 10614.7058838199. The cubic root of 112671981 is about 482.9905608793.

The spelling of 112671981 in words is "one hundred twelve million, six hundred seventy-one thousand, nine hundred eighty-one".