1115142323 has 4 divisors (see below), whose sum is σ = 1151114688. Its totient is φ = 1079169960.

The previous prime is 1115142311. The next prime is 1115142331. The reversal of 1115142323 is 3232415111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115142323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115142383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17986136 + ... + 17986197.

It is an arithmetic number, because the mean of its divisors is an integer number (287778672).

Almost surely, 2^1115142323 is an apocalyptic number.

1115142323 is a deficient number, since it is larger than the sum of its proper divisors (35972365).

1115142323 is an equidigital number, since it uses as much as digits as its factorization.

1115142323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35972364.

The product of its digits is 720, while the sum is 23.

The square root of 1115142323 is about 33393.7467649259. The cubic root of 1115142323 is about 1036.9952481210.

Adding to 1115142323 its reverse (3232415111), we get a palindrome (4347557434).

The spelling of 1115142323 in words is "one billion, one hundred fifteen million, one hundred forty-two thousand, three hundred twenty-three".