131146813 has 8 divisors (see below), whose sum is σ = 151428032. Its totient is φ = 111252096.

The previous prime is 131146739. The next prime is 131146819. The reversal of 131146813 is 318641131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131146813 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 95895 + ... + 97252.

It is an arithmetic number, because the mean of its divisors is an integer number (18928504).

Almost surely, 2^131146813 is an apocalyptic number.

It is an amenable number.

131146813 is a deficient number, since it is larger than the sum of its proper divisors (20281219).

131146813 is an equidigital number, since it uses as much as digits as its factorization.

131146813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193251.

The product of its digits is 1728, while the sum is 28.

The square root of 131146813 is about 11451.9349020155. The cubic root of 131146813 is about 508.0649639469.

Adding to 131146813 its reverse (318641131), we get a palindrome (449787944).

The spelling of 131146813 in words is "one hundred thirty-one million, one hundred forty-six thousand, eight hundred thirteen".