131887711 has 4 divisors (see below), whose sum is σ = 133097800. Its totient is φ = 130677624.

The previous prime is 131887709. The next prime is 131887729. The reversal of 131887711 is 117788131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131887711 - 2¹ = 131887709 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 (131887111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604881 + ... + 605098.

It is an arithmetic number, because the mean of its divisors is an integer number (33274450).

Almost surely, 2^131887711 is an apocalyptic number.

131887711 is a deficient number, since it is larger than the sum of its proper divisors (1210089).

131887711 is a wasteful number, since it uses less digits than its factorization.

131887711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210088.

The product of its digits is 9408, while the sum is 37.

The square root of 131887711 is about 11484.2375018980. The cubic root of 131887711 is about 509.0199183449.

The spelling of 131887711 in words is "one hundred thirty-one million, eight hundred eighty-seven thousand, seven hundred eleven".