131251112 has 8 divisors (see below), whose sum is σ = 246095850. Its totient is φ = 65625552.

The previous prime is 131251103. The next prime is 131251147. The reversal of 131251112 is 211152131.

It can be written as a sum of positive squares in only one way, i.e., 126472516 + 4778596 = 11246^2 + 2186^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8203187 + ... + 8203202.

Almost surely, 2^131251112 is an apocalyptic number.

It is an amenable number.

131251112 is a deficient number, since it is larger than the sum of its proper divisors (114844738).

131251112 is a wasteful number, since it uses less digits than its factorization.

131251112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16406395 (or 16406391 counting only the distinct ones).

The product of its digits is 60, while the sum is 17.

The square root of 131251112 is about 11456.4877689456. The cubic root of 131251112 is about 508.1996136196.

The spelling of 131251112 in words is "one hundred thirty-one million, two hundred fifty-one thousand, one hundred twelve".