131115235234505 has 8 divisors (see below), whose sum is σ = 157344518838600. Its totient is φ = 104888030482816.

The previous prime is 131115235234481. The next prime is 131115235234507. The reversal of 131115235234505 is 505432532511131.

It can be written as a sum of positive squares in 4 ways, for example, as 10294754599936 + 120820480634569 = 3208544^2 + 10991837^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131115235234505 - 2⁴⁶ = 60746491056841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131115235234507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519574340 + ... + 519826629.

It is an arithmetic number, because the mean of its divisors is an integer number (19668064854825).

Almost surely, 2^{131115235234505} is an apocalyptic number.

It is an amenable number.

131115235234505 is a deficient number, since it is larger than the sum of its proper divisors (26229283604095).

131115235234505 is a wasteful number, since it uses less digits than its factorization.

131115235234505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039426203.

The product of its (nonzero) digits is 270000, while the sum is 41.

Adding to 131115235234505 its reverse (505432532511131), we get a palindrome (636547767745636).

The spelling of 131115235234505 in words is "one hundred thirty-one trillion, one hundred fifteen billion, two hundred thirty-five million, two hundred thirty-four thousand, five hundred five".