1001103231 has 4 divisors (see below), whose sum is σ = 1334804312. Its totient is φ = 667402152.

The previous prime is 1001103227. The next prime is 1001103241. The reversal of 1001103231 is 1323011001.

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

It is not a de Polignac number, because 1001103231 - 2² = 1001103227 is a prime.

It is a super-2 number, since 2×1001103231² = 2004415358237278722, 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 (1001103241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166850536 + ... + 166850541.

It is an arithmetic number, because the mean of its divisors is an integer number (333701078).

Almost surely, 2^1001103231 is an apocalyptic number.

1001103231 is a deficient number, since it is larger than the sum of its proper divisors (333701081).

1001103231 is an equidigital number, since it uses as much as digits as its factorization.

1001103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333701080.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1001103231 is about 31640.2154069785. The cubic root of 1001103231 is about 1000.3676085141.

Adding to 1001103231 its reverse (1323011001), we get a palindrome (2324114232).

The spelling of 1001103231 in words is "one billion, one million, one hundred three thousand, two hundred thirty-one".