2015423823 has 8 divisors (see below), whose sum is σ = 3071122048. Its totient is φ = 1151670744.

The previous prime is 2015423777. The next prime is 2015423849. The reversal of 2015423823 is 3283245102.

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

It is not a de Polignac number, because 2015423823 - 2²⁶ = 1948314959 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 (2015423623) 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, 47986261 + ... + 47986302.

It is an arithmetic number, because the mean of its divisors is an integer number (383890256).

Almost surely, 2^2015423823 is an apocalyptic number.

2015423823 is a deficient number, since it is larger than the sum of its proper divisors (1055698225).

2015423823 is an equidigital number, since it uses as much as digits as its factorization.

2015423823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95972573.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2015423823 is about 44893.4719419205. The cubic root of 2015423823 is about 1263.1515594820.

Adding to 2015423823 its reverse (3283245102), we get a palindrome (5298668925).

The spelling of 2015423823 in words is "two billion, fifteen million, four hundred twenty-three thousand, eight hundred twenty-three".