2143011236 has 12 divisors (see below), whose sum is σ = 3750628812. Its totient is φ = 1071403008.

The previous prime is 2143011229. The next prime is 2143011263. The reversal of 2143011236 is 6321103412.

It can be written as a sum of positive squares in 2 ways, for example, as 969948736 + 1173062500 = 31144^2 + 34250^2 .

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 3 ways as a sum of consecutive naturals, for example, 40016 + ... + 76728.

It is an arithmetic number, because the mean of its divisors is an integer number (312552401).

Almost surely, 2^2143011236 is an apocalyptic number.

It is an amenable number.

2143011236 is a deficient number, since it is larger than the sum of its proper divisors (1607617576).

2143011236 is a wasteful number, since it uses less digits than its factorization.

2143011236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51310 (or 51308 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2143011236 is about 46292.6693548773. The cubic root of 2143011236 is about 1289.2628915967.

Adding to 2143011236 its reverse (6321103412), we get a palindrome (8464114648).

The spelling of 2143011236 in words is "two billion, one hundred forty-three million, eleven thousand, two hundred thirty-six".