2143423331 has 32 divisors (see below), whose sum is σ = 2566287360. Its totient is φ = 1752458400.

The previous prime is 2143423327. The next prime is 2143423333. The reversal of 2143423331 is 1333243412.

It is not a de Polignac number, because 2143423331 - 2² = 2143423327 is a prime.

It is a super-2 number, since 2×2143423331² = 9188527151750271122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2143423331.

It is not an unprimeable number, because it can be changed into a prime (2143423333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1964096 + ... + 1965186.

It is an arithmetic number, because the mean of its divisors is an integer number (80196480).

Almost surely, 2^2143423331 is an apocalyptic number.

2143423331 is a deficient number, since it is larger than the sum of its proper divisors (422864029).

2143423331 is a wasteful number, since it uses less digits than its factorization.

2143423331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its digits is 5184, while the sum is 26.

The square root of 2143423331 is about 46297.1201156184. The cubic root of 2143423331 is about 1289.3455268360.

Adding to 2143423331 its reverse (1333243412), we get a palindrome (3476666743).

The spelling of 2143423331 in words is "two billion, one hundred forty-three million, four hundred twenty-three thousand, three hundred thirty-one".