131121233553015 has 32 divisors (see below), whose sum is σ = 233130280501440. Its totient is φ = 69923564972928.

The previous prime is 131121233553001. The next prime is 131121233553019. The reversal of 131121233553015 is 510355332121131.

131121233553015 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 2 + 12 + 335 + 5 + 301 + 5 = 666.

It is not a de Polignac number, because 131121233553015 - 2⁶ = 131121233552951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121233553019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52664772 + ... + 55098281.

It is an arithmetic number, because the mean of its divisors is an integer number (7285321265670).

Almost surely, 2^{131121233553015} is an apocalyptic number.

131121233553015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131121233553015 is a deficient number, since it is larger than the sum of its proper divisors (102009046948425).

131121233553015 is a wasteful number, since it uses less digits than its factorization.

131121233553015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107772080 (or 107772074 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

Adding to 131121233553015 its reverse (510355332121131), we get a palindrome (641476565674146).

The spelling of 131121233553015 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, two hundred thirty-three million, five hundred fifty-three thousand, fifteen".