115512321 has 8 divisors (see below), whose sum is σ = 154158784. Its totient is φ = 76937040.

The previous prime is 115512289. The next prime is 115512347. The reversal of 115512321 is 123215511.

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

It is not a de Polignac number, because 115512321 - 2⁵ = 115512289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115512361) 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, 13885 + ... + 20586.

It is an arithmetic number, because the mean of its divisors is an integer number (19269848).

Almost surely, 2^115512321 is an apocalyptic number.

It is an amenable number.

115512321 is a deficient number, since it is larger than the sum of its proper divisors (38646463).

115512321 is a wasteful number, since it uses less digits than its factorization.

115512321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35591.

The product of its digits is 300, while the sum is 21.

The square root of 115512321 is about 10747.6658396137. The cubic root of 115512321 is about 487.0154849491.

Adding to 115512321 its reverse (123215511), we get a palindrome (238727832).

The spelling of 115512321 in words is "one hundred fifteen million, five hundred twelve thousand, three hundred twenty-one".