131493887 has 8 divisors (see below), whose sum is σ = 150413472. Its totient is φ = 112608000.

The previous prime is 131493883. The next prime is 131493913. The reversal of 131493887 is 788394131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131493887 - 2² = 131493883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131493883) 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, 587 + ... + 16227.

It is an arithmetic number, because the mean of its divisors is an integer number (18801684).

Almost surely, 2^131493887 is an apocalyptic number.

131493887 is a deficient number, since it is larger than the sum of its proper divisors (18919585).

131493887 is a wasteful number, since it uses less digits than its factorization.

131493887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16849.

The product of its digits is 145152, while the sum is 44.

The square root of 131493887 is about 11467.0783986158. The cubic root of 131493887 is about 508.5127593308.

The spelling of 131493887 in words is "one hundred thirty-one million, four hundred ninety-three thousand, eight hundred eighty-seven".