2123310515 has 16 divisors (see below), whose sum is σ = 2690737920. Its totient is φ = 1604049120.

The previous prime is 2123310499. The next prime is 2123310533. The reversal of 2123310515 is 5150133212.

It is a happy number.

It is not a de Polignac number, because 2123310515 - 2⁴ = 2123310499 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6389 + ... + 65478.

It is an arithmetic number, because the mean of its divisors is an integer number (168171120).

Almost surely, 2^2123310515 is an apocalyptic number.

2123310515 is a deficient number, since it is larger than the sum of its proper divisors (567427405).

2123310515 is a wasteful number, since it uses less digits than its factorization.

2123310515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72202.

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

The square root of 2123310515 is about 46079.3936049510. The cubic root of 2123310515 is about 1285.2999879990.

Adding to 2123310515 its reverse (5150133212), we get a palindrome (7273443727).

The spelling of 2123310515 in words is "two billion, one hundred twenty-three million, three hundred ten thousand, five hundred fifteen".