131146811 has 4 divisors (see below), whose sum is σ = 131170800. Its totient is φ = 131122824.

The previous prime is 131146739. The next prime is 131146819. The reversal of 131146811 is 118641131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118641131 = 7 ⋅16948733.

It is a cyclic number.

It is not a de Polignac number, because 131146811 - 2¹⁰ = 131145787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131146819) 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, 650 + ... + 16208.

It is an arithmetic number, because the mean of its divisors is an integer number (32792700).

Almost surely, 2^131146811 is an apocalyptic number.

131146811 is a deficient number, since it is larger than the sum of its proper divisors (23989).

131146811 is an equidigital number, since it uses as much as digits as its factorization.

131146811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23988.

The product of its digits is 576, while the sum is 26.

The square root of 131146811 is about 11451.9348146940. The cubic root of 131146811 is about 508.0649613642.

Adding to 131146811 its reverse (118641131), we get a palindrome (249787942).

The spelling of 131146811 in words is "one hundred thirty-one million, one hundred forty-six thousand, eight hundred eleven".