131345500351505 has 24 divisors (see below), whose sum is σ = 173657311015272. Its totient is φ = 95297102208000.

The previous prime is 131345500351463. The next prime is 131345500351519. The reversal of 131345500351505 is 505153005543131.

It can be written as a sum of positive squares in 4 ways, for example, as 12679837887376 + 118665662464129 = 3560876^2 + 10893377^2 .

It is not a de Polignac number, because 131345500351505 - 2⁸ = 131345500351249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257583776 + ... + 258093185.

It is an arithmetic number, because the mean of its divisors is an integer number (7235721292303).

Almost surely, 2^{131345500351505} is an apocalyptic number.

It is an amenable number.

131345500351505 is a deficient number, since it is larger than the sum of its proper divisors (42311810663767).

131345500351505 is a wasteful number, since it uses less digits than its factorization.

131345500351505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515677409 (or 515677398 counting only the distinct ones).

The product of its (nonzero) digits is 337500, while the sum is 41.

Adding to 131345500351505 its reverse (505153005543131), we get a palindrome (636498505894636).

The spelling of 131345500351505 in words is "one hundred thirty-one trillion, three hundred forty-five billion, five hundred million, three hundred fifty-one thousand, five hundred five".