1001243223 has 12 divisors (see below), whose sum is σ = 1446600168. Its totient is φ = 667329360.

The previous prime is 1001243219. The next prime is 1001243233. The reversal of 1001243223 is 3223421001.

It is not a de Polignac number, because 1001243223 - 2² = 1001243219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001243196 and 1001243205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001243233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32488 + ... + 55298.

It is an arithmetic number, because the mean of its divisors is an integer number (120550014).

Almost surely, 2^1001243223 is an apocalyptic number.

1001243223 is a deficient number, since it is larger than the sum of its proper divisors (445356945).

1001243223 is a wasteful number, since it uses less digits than its factorization.

1001243223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27694 (or 27691 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1001243223 is about 31642.4275775422. The cubic root of 1001243223 is about 1000.4142360515.

Adding to 1001243223 its reverse (3223421001), we get a palindrome (4224664224).

It can be divided in two parts, 10012 and 43223, that added together give a palindrome (53235).

The spelling of 1001243223 in words is "one billion, one million, two hundred forty-three thousand, two hundred twenty-three".