1001323422 has 48 divisors (see below), whose sum is σ = 2375438832. Its totient is φ = 302319360.

The previous prime is 1001323417. The next prime is 1001323439. The reversal of 1001323422 is 2243231001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1001323395 and 1001323404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45718 + ... + 63974.

It is an arithmetic number, because the mean of its divisors is an integer number (49488309).

Almost surely, 2^1001323422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001323422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187719416).

1001323422 is an abundant number, since it is smaller than the sum of its proper divisors (1374115410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001323422 is a wasteful number, since it uses less digits than its factorization.

1001323422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18553 (or 18550 counting only the distinct ones).

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

The square root of 1001323422 is about 31643.6948221917. The cubic root of 1001323422 is about 1000.4409462045.

Adding to 1001323422 its reverse (2243231001), we get a palindrome (3244554423).

It can be divided in two parts, 1001 and 323422, that added together give a palindrome (324423).

The spelling of 1001323422 in words is "one billion, one million, three hundred twenty-three thousand, four hundred twenty-two".