131851868 has 24 divisors (see below), whose sum is σ = 249454800. Its totient is φ = 60766848.

The previous prime is 131851861. The next prime is 131851879. The reversal of 131851868 is 868158131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131851861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20633 + ... + 26256.

It is an arithmetic number, because the mean of its divisors is an integer number (10393950).

Almost surely, 2^131851868 is an apocalyptic number.

It is an amenable number.

131851868 is a deficient number, since it is larger than the sum of its proper divisors (117602932).

131851868 is a wasteful number, since it uses less digits than its factorization.

131851868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46949 (or 46947 counting only the distinct ones).

The product of its digits is 46080, while the sum is 41.

The square root of 131851868 is about 11482.6768656093. The cubic root of 131851868 is about 508.9738022112.

The spelling of 131851868 in words is "one hundred thirty-one million, eight hundred fifty-one thousand, eight hundred sixty-eight".