20223251443 has 4 divisors (see below), whose sum is σ = 20233349928. Its totient is φ = 20213152960.

The previous prime is 20223251437. The next prime is 20223251479. The reversal of 20223251443 is 34415232202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20223251443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20223251743) 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, 5046238 + ... + 5050243.

It is an arithmetic number, because the mean of its divisors is an integer number (5058337482).

Almost surely, 2^20223251443 is an apocalyptic number.

20223251443 is a deficient number, since it is larger than the sum of its proper divisors (10098485).

20223251443 is a wasteful number, since it uses less digits than its factorization.

20223251443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10098484.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20223251443 its reverse (34415232202), we get a palindrome (54638483645).

The spelling of 20223251443 in words is "twenty billion, two hundred twenty-three million, two hundred fifty-one thousand, four hundred forty-three".