131323015 has 16 divisors (see below), whose sum is σ = 161900928. Its totient is φ = 102221856.

The previous prime is 131323013. The next prime is 131323051. The reversal of 131323015 is 510323131.

It is a cyclic number.

It is not a de Polignac number, because 131323015 - 2¹ = 131323013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131322983 and 131323001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131323013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25444 + ... + 30166.

It is an arithmetic number, because the mean of its divisors is an integer number (10118808).

Almost surely, 2^131323015 is an apocalyptic number.

131323015 is a deficient number, since it is larger than the sum of its proper divisors (30577913).

131323015 is an equidigital number, since it uses as much as digits as its factorization.

131323015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4878.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 131323015 is about 11459.6254301788. The cubic root of 131323015 is about 508.2923986267.

Adding to 131323015 its reverse (510323131), we get a palindrome (641646146).

The spelling of 131323015 in words is "one hundred thirty-one million, three hundred twenty-three thousand, fifteen".