131145511202515 has 16 divisors (see below), whose sum is σ = 158846813412768. Its totient is φ = 103935872190976.

The previous prime is 131145511202477. The next prime is 131145511202561. The reversal of 131145511202515 is 515202115541131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131145511202515 - 2¹¹ = 131145511200467 is a prime.

It is a super-2 number, since 2×131145511202515² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56987857 + ... + 59244466.

It is an arithmetic number, because the mean of its divisors is an integer number (9927925838298).

Almost surely, 2^{131145511202515} is an apocalyptic number.

131145511202515 is a deficient number, since it is larger than the sum of its proper divisors (27701302210253).

131145511202515 is a wasteful number, since it uses less digits than its factorization.

131145511202515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116234438.

The product of its (nonzero) digits is 30000, while the sum is 37.

Adding to 131145511202515 its reverse (515202115541131), we get a palindrome (646347626743646).

The spelling of 131145511202515 in words is "one hundred thirty-one trillion, one hundred forty-five billion, five hundred eleven million, two hundred two thousand, five hundred fifteen".