2115515323 has 2 divisors, whose sum is σ = 2115515324. Its totient is φ = 2115515322.

The previous prime is 2115515291. The next prime is 2115515341. The reversal of 2115515323 is 3235155112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2115515323 - 2⁵ = 2115515291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2115515291 and 2115515300.

It is not a weakly prime, because it can be changed into another prime (2115515393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057757661 + 1057757662.

It is an arithmetic number, because the mean of its divisors is an integer number (1057757662).

Almost surely, 2^2115515323 is an apocalyptic number.

2115515323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115515323 is an equidigital number, since it uses as much as digits as its factorization.

2115515323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 28.

The square root of 2115515323 is about 45994.7314700282. The cubic root of 2115515323 is about 1283.7251757564.

The spelling of 2115515323 in words is "two billion, one hundred fifteen million, five hundred fifteen thousand, three hundred twenty-three".