131125015 has 16 divisors (see below), whose sum is σ = 180378432. Its totient is φ = 89639424.

The previous prime is 131124989. The next prime is 131125019. The reversal of 131125015 is 510521131.

It is not a de Polignac number, because 131125015 - 2⁷ = 131124887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131124983 and 131125001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131125019) 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, 6237 + ... + 17353.

It is an arithmetic number, because the mean of its divisors is an integer number (11273652).

Almost surely, 2^131125015 is an apocalyptic number.

131125015 is a deficient number, since it is larger than the sum of its proper divisors (49253417).

131125015 is a wasteful number, since it uses less digits than its factorization.

131125015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11466.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 131125015 is about 11450.9831455644. The cubic root of 131125015 is about 508.0368137807.

Adding to 131125015 its reverse (510521131), we get a palindrome (641646146).

The spelling of 131125015 in words is "one hundred thirty-one million, one hundred twenty-five thousand, fifteen".