131121302413545 has 96 divisors (see below), whose sum is σ = 241028939589120. Its totient is φ = 67629899980800.

The previous prime is 131121302413531. The next prime is 131121302413547. The reversal of 131121302413545 is 545314203121131.

131121302413545 is a `hidden beast` number, since 1 + 3 + 11 + 21 + 30 + 241 + 354 + 5 = 666.

It is not a de Polignac number, because 131121302413545 - 2¹¹ = 131121302411497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131121302413547) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 192576105 + ... + 193255785.

It is an arithmetic number, because the mean of its divisors is an integer number (2510718120720).

Almost surely, 2^{131121302413545} is an apocalyptic number.

131121302413545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131121302413545 is a deficient number, since it is larger than the sum of its proper divisors (109907637175575).

131121302413545 is a wasteful number, since it uses less digits than its factorization.

131121302413545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681244 (or 681207 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 131121302413545 its reverse (545314203121131), we get a palindrome (676435505534676).

The spelling of 131121302413545 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, three hundred two million, four hundred thirteen thousand, five hundred forty-five".