131475767947 has 4 divisors (see below), whose sum is σ = 131485778496. Its totient is φ = 131465757400.

The previous prime is 131475767881. The next prime is 131475767987. The reversal of 131475767947 is 749767574131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749767574131 = 58427 ⋅12832553.

It is a cyclic number.

It is not a de Polignac number, because 131475767947 - 2¹⁹ = 131475243659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131475767987) 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, 4985548 + ... + 5011849.

It is an arithmetic number, because the mean of its divisors is an integer number (32871444624).

Almost surely, 2^131475767947 is an apocalyptic number.

131475767947 is a deficient number, since it is larger than the sum of its proper divisors (10010549).

131475767947 is an equidigital number, since it uses as much as digits as its factorization.

131475767947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010548.

The product of its digits is 31116960, while the sum is 61.

The spelling of 131475767947 in words is "one hundred thirty-one billion, four hundred seventy-five million, seven hundred sixty-seven thousand, nine hundred forty-seven".