131611047 has 8 divisors (see below), whose sum is σ = 175535856. Its totient is φ = 87713472.

The previous prime is 131611021. The next prime is 131611061. The reversal of 131611047 is 740116131.

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

It is not a de Polignac number, because 131611047 - 2¹⁰ = 131610023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131611247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11523 + ... + 19899.

It is an arithmetic number, because the mean of its divisors is an integer number (21941982).

Almost surely, 2^131611047 is an apocalyptic number.

131611047 is a deficient number, since it is larger than the sum of its proper divisors (43924809).

131611047 is an equidigital number, since it uses as much as digits as its factorization.

131611047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13617.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 131611047 is about 11472.1857987046. The cubic root of 131611047 is about 508.6637414302.

Adding to 131611047 its reverse (740116131), we get a palindrome (871727178).

The spelling of 131611047 in words is "one hundred thirty-one million, six hundred eleven thousand, forty-seven".