20143237223 has 4 divisors (see below), whose sum is σ = 20837831640. Its totient is φ = 19448642808.

The previous prime is 20143237217. The next prime is 20143237237. The reversal of 20143237223 is 32273234102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32273234102 = 2 ⋅16136617051.

It is a cyclic number.

It is not a de Polignac number, because 20143237223 - 2⁴ = 20143237207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 694594387 = 20143237223 / (2 + 0 + 1 + 4 + 3 + 2 + 3 + 7 + 2 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143231223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347297165 + ... + 347297222.

It is an arithmetic number, because the mean of its divisors is an integer number (5209457910).

Almost surely, 2^20143237223 is an apocalyptic number.

20143237223 is a deficient number, since it is larger than the sum of its proper divisors (694594417).

20143237223 is an equidigital number, since it uses as much as digits as its factorization.

20143237223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694594416.

The product of its (nonzero) digits is 12096, while the sum is 29.

The spelling of 20143237223 in words is "twenty billion, one hundred forty-three million, two hundred thirty-seven thousand, two hundred twenty-three".