115211303230505 has 4 divisors (see below), whose sum is σ = 138253563876612. Its totient is φ = 92169042584400.

The previous prime is 115211303230501. The next prime is 115211303230559. The reversal of 115211303230505 is 505032303112511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77350811294761 + 37860491935744 = 8794931^2 + 6153088^2 .

It is not a de Polignac number, because 115211303230505 - 2² = 115211303230501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115211303230501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11521130323046 + ... + 11521130323055.

It is an arithmetic number, because the mean of its divisors is an integer number (34563390969153).

Almost surely, 2^{115211303230505} is an apocalyptic number.

It is an amenable number.

115211303230505 is a deficient number, since it is larger than the sum of its proper divisors (23042260646107).

115211303230505 is an equidigital number, since it uses as much as digits as its factorization.

115211303230505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23042260646106.

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 115211303230505 in words is "one hundred fifteen trillion, two hundred eleven billion, three hundred three million, two hundred thirty thousand, five hundred five".