131516232747 has 8 divisors (see below), whose sum is σ = 177162760656. Its totient is φ = 86773596672.

The previous prime is 131516232739. The next prime is 131516232767. The reversal of 131516232747 is 747232615131.

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

It is not a de Polignac number, because 131516232747 - 2³ = 131516232739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131516232699 and 131516232708.

It is not an unprimeable number, because it can be changed into a prime (131516232737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225972618 + ... + 225973199.

It is an arithmetic number, because the mean of its divisors is an integer number (22145345082).

Almost surely, 2^131516232747 is an apocalyptic number.

131516232747 is a deficient number, since it is larger than the sum of its proper divisors (45646527909).

131516232747 is an equidigital number, since it uses as much as digits as its factorization.

131516232747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451945917.

The product of its digits is 211680, while the sum is 42.

Adding to 131516232747 its reverse (747232615131), we get a palindrome (878748847878).

The spelling of 131516232747 in words is "one hundred thirty-one billion, five hundred sixteen million, two hundred thirty-two thousand, seven hundred forty-seven".