131887751 has 12 divisors (see below), whose sum is σ = 143373912. Its totient is φ = 121231488.

The previous prime is 131887739. The next prime is 131887753. The reversal of 131887751 is 157788131.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-131887751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131887699 and 131887708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131887753) 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, 7121 + ... + 17733.

It is an arithmetic number, because the mean of its divisors is an integer number (11947826).

Almost surely, 2^131887751 is an apocalyptic number.

131887751 is a deficient number, since it is larger than the sum of its proper divisors (11486161).

131887751 is a wasteful number, since it uses less digits than its factorization.

131887751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690 (or 10673 counting only the distinct ones).

The product of its digits is 47040, while the sum is 41.

The square root of 131887751 is about 11484.2392434153. The cubic root of 131887751 is about 509.0199698049.

The spelling of 131887751 in words is "one hundred thirty-one million, eight hundred eighty-seven thousand, seven hundred fifty-one".