1001123231 has 8 divisors (see below), whose sum is σ = 1050067680. Its totient is φ = 952630272.

The previous prime is 1001123219. The next prime is 1001123261. The reversal of 1001123231 is 1323211001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001123231 - 2¹⁸ = 1000861087 is a prime.

It is a super-2 number, since 2×1001123231² = 2004495447295758722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001123261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108326 + ... + 117203.

It is an arithmetic number, because the mean of its divisors is an integer number (131258460).

Almost surely, 2^1001123231 is an apocalyptic number.

1001123231 is a deficient number, since it is larger than the sum of its proper divisors (48944449).

1001123231 is a wasteful number, since it uses less digits than its factorization.

1001123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225745.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1001123231 is about 31640.5314588741. The cubic root of 1001123231 is about 1000.3742702376.

Adding to 1001123231 its reverse (1323211001), we get a palindrome (2324334232).

The spelling of 1001123231 in words is "one billion, one million, one hundred twenty-three thousand, two hundred thirty-one".