2015423623 has 2 divisors, whose sum is σ = 2015423624. Its totient is φ = 2015423622.

The previous prime is 2015423573. The next prime is 2015423629. The reversal of 2015423623 is 3263245102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2015423623 - 2²⁹ = 1478552711 is a prime.

It is a super-2 number, since 2×2015423623² = 8123864760292892258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2015423591 and 2015423600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2015423629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007711811 + 1007711812.

It is an arithmetic number, because the mean of its divisors is an integer number (1007711812).

Almost surely, 2^2015423623 is an apocalyptic number.

2015423623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015423623 is an equidigital number, since it uses as much as digits as its factorization.

2015423623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2015423623 is about 44893.4697144251. The cubic root of 2015423623 is about 1263.1515176992.

Adding to 2015423623 its reverse (3263245102), we get a palindrome (5278668725).

The spelling of 2015423623 in words is "two billion, fifteen million, four hundred twenty-three thousand, six hundred twenty-three".