131520252444 has 96 divisors (see below), whose sum is σ = 352579024896. Its totient is φ = 37378411200.

The previous prime is 131520252401. The next prime is 131520252467. The reversal of 131520252444 is 444252025131.

131520252444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×131520252444³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28275519 + ... + 28280169.

It is an arithmetic number, because the mean of its divisors is an integer number (3672698176).

Almost surely, 2^131520252444 is an apocalyptic number.

131520252444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131520252444 is an abundant number, since it is smaller than the sum of its proper divisors (221058772452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131520252444 is a wasteful number, since it uses less digits than its factorization.

131520252444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 131520252444 its reverse (444252025131), we get a palindrome (575772277575).

The spelling of 131520252444 in words is "one hundred thirty-one billion, five hundred twenty million, two hundred fifty-two thousand, four hundred forty-four".