131120312350545 has 128 divisors (see below), whose sum is σ = 270876978708480. Its totient is φ = 58942461957120.

The previous prime is 131120312350541. The next prime is 131120312350583. The reversal of 131120312350545 is 545053213021131.

It is a happy number.

131120312350545 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 20 + 3 + 123 + 505 + 4 + 5 = 666.

It is not a de Polignac number, because 131120312350545 - 2² = 131120312350541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131120312350541) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8727480 + ... + 18395910.

It is an arithmetic number, because the mean of its divisors is an integer number (2116226396160).

Almost surely, 2^{131120312350545} is an apocalyptic number.

131120312350545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131120312350545 is an abundant number, since it is smaller than the sum of its proper divisors (139756666357935).

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

131120312350545 is a wasteful number, since it uses less digits than its factorization.

131120312350545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9668692 (or 9668686 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 131120312350545 its reverse (545053213021131), we get a palindrome (676173525371676).

The spelling of 131120312350545 in words is "one hundred thirty-one trillion, one hundred twenty billion, three hundred twelve million, three hundred fifty thousand, five hundred forty-five".