2013515123 has 2 divisors, whose sum is σ = 2013515124. Its totient is φ = 2013515122.

The previous prime is 2013515081. The next prime is 2013515143. The reversal of 2013515123 is 3215153102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2013515123 - 2¹⁰ = 2013514099 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2013515143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006757561 + 1006757562.

It is an arithmetic number, because the mean of its divisors is an integer number (1006757562).

Almost surely, 2^2013515123 is an apocalyptic number.

2013515123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2013515123 is an equidigital number, since it uses as much as digits as its factorization.

2013515123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2013515123 is about 44872.2088045596. The cubic root of 2013515123 is about 1262.7526791312.

Adding to 2013515123 its reverse (3215153102), we get a palindrome (5228668225).

The spelling of 2013515123 in words is "two billion, thirteen million, five hundred fifteen thousand, one hundred twenty-three".