115215143 has 4 divisors (see below), whose sum is σ = 116934840. Its totient is φ = 113495448.

The previous prime is 115215131. The next prime is 115215181. The reversal of 115215143 is 341512511.

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

It is a cyclic number.

It is not a de Polignac number, because 115215143 - 2⁸ = 115214887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115215193) 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, 859748 + ... + 859881.

It is an arithmetic number, because the mean of its divisors is an integer number (29233710).

Almost surely, 2^115215143 is an apocalyptic number.

115215143 is a deficient number, since it is larger than the sum of its proper divisors (1719697).

115215143 is an equidigital number, since it uses as much as digits as its factorization.

115215143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719696.

The product of its digits is 600, while the sum is 23.

The square root of 115215143 is about 10733.8317016804. The cubic root of 115215143 is about 486.5974788008.

Adding to 115215143 its reverse (341512511), we get a palindrome (456727654).

The spelling of 115215143 in words is "one hundred fifteen million, two hundred fifteen thousand, one hundred forty-three".