131473787 has 4 divisors (see below), whose sum is σ = 138393480. Its totient is φ = 124554096.

The previous prime is 131473781. The next prime is 131473799. The reversal of 131473787 is 787374131.

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 131473787 - 2¹⁰ = 131472763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131473781) 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, 3459818 + ... + 3459855.

It is an arithmetic number, because the mean of its divisors is an integer number (34598370).

Almost surely, 2^131473787 is an apocalyptic number.

131473787 is a deficient number, since it is larger than the sum of its proper divisors (6919693).

131473787 is an equidigital number, since it uses as much as digits as its factorization.

131473787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6919692.

The product of its digits is 98784, while the sum is 41.

The square root of 131473787 is about 11466.2019431022. The cubic root of 131473787 is about 508.4868477909.

The spelling of 131473787 in words is "one hundred thirty-one million, four hundred seventy-three thousand, seven hundred eighty-seven".