131520252513 has 16 divisors (see below), whose sum is σ = 190208231360. Its totient is φ = 80353266624.

The previous prime is 131520252511. The next prime is 131520252529. The reversal of 131520252513 is 315252025131.

It is not a de Polignac number, because 131520252513 - 2¹ = 131520252511 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131520252511) 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, 12125206 + ... + 12136047.

It is an arithmetic number, because the mean of its divisors is an integer number (11888014460).

Almost surely, 2^131520252513 is an apocalyptic number.

131520252513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131520252513 is a deficient number, since it is larger than the sum of its proper divisors (58687978847).

131520252513 is a wasteful number, since it uses less digits than its factorization.

131520252513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24261408.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 131520252513 its reverse (315252025131), we get a palindrome (446772277644).

The spelling of 131520252513 in words is "one hundred thirty-one billion, five hundred twenty million, two hundred fifty-two thousand, five hundred thirteen".