2143304523 has 32 divisors (see below), whose sum is σ = 3239040000. Its totient is φ = 1400439456.

The previous prime is 2143304509. The next prime is 2143304549. The reversal of 2143304523 is 3254033412.

It is not a de Polignac number, because 2143304523 - 2⁴ = 2143304507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2143304573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292873 + ... + 300101.

It is an arithmetic number, because the mean of its divisors is an integer number (101220000).

Almost surely, 2^2143304523 is an apocalyptic number.

2143304523 is a deficient number, since it is larger than the sum of its proper divisors (1095735477).

2143304523 is a wasteful number, since it uses less digits than its factorization.

2143304523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456 (or 7450 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 2143304523 is about 46295.8369942698. The cubic root of 2143304523 is about 1289.3217039804.

Adding to 2143304523 its reverse (3254033412), we get a palindrome (5397337935).

The spelling of 2143304523 in words is "two billion, one hundred forty-three million, three hundred four thousand, five hundred twenty-three".