13130787 has 4 divisors (see below), whose sum is σ = 17507720. Its totient is φ = 8753856.

The previous prime is 13130779. The next prime is 13130807. The reversal of 13130787 is 78703131.

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

It is not a de Polignac number, because 13130787 - 2³ = 13130779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13130717) 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, 2188462 + ... + 2188467.

It is an arithmetic number, because the mean of its divisors is an integer number (4376930).

Almost surely, 2^13130787 is an apocalyptic number.

13130787 is a deficient number, since it is larger than the sum of its proper divisors (4376933).

13130787 is an equidigital number, since it uses as much as digits as its factorization.

13130787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376932.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 13130787 is about 3623.6427804076. The cubic root of 13130787 is about 235.9193622330.

The spelling of 13130787 in words is "thirteen million, one hundred thirty thousand, seven hundred eighty-seven".