2143331515 has 24 divisors (see below), whose sum is σ = 2790255168. Its totient is φ = 1579818240.

The previous prime is 2143331513. The next prime is 2143331579. The reversal of 2143331515 is 5151333412.

It is a happy number.

It is not a de Polignac number, because 2143331515 - 2¹ = 2143331513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143331513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519310 + ... + 523420.

It is an arithmetic number, because the mean of its divisors is an integer number (116260632).

Almost surely, 2^2143331515 is an apocalyptic number.

2143331515 is a deficient number, since it is larger than the sum of its proper divisors (646923653).

2143331515 is a wasteful number, since it uses less digits than its factorization.

2143331515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759 (or 4746 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 2143331515 is about 46296.1285098441. The cubic root of 2143331515 is about 1289.3271163743.

Adding to 2143331515 its reverse (5151333412), we get a palindrome (7294664927).

The spelling of 2143331515 in words is "two billion, one hundred forty-three million, three hundred thirty-one thousand, five hundred fifteen".