1001131023 has 4 divisors (see below), whose sum is σ = 1334841368. Its totient is φ = 667420680.

The previous prime is 1001131013. The next prime is 1001131049. The reversal of 1001131023 is 3201311001.

1001131023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1001131023 - 2¹³ = 1001122831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001131013) 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, 166855168 + ... + 166855173.

It is an arithmetic number, because the mean of its divisors is an integer number (333710342).

Almost surely, 2^1001131023 is an apocalyptic number.

1001131023 is a deficient number, since it is larger than the sum of its proper divisors (333710345).

1001131023 is an equidigital number, since it uses as much as digits as its factorization.

1001131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333710344.

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

The square root of 1001131023 is about 31640.6545918380. The cubic root of 1001131023 is about 1000.3768656211.

Adding to 1001131023 its reverse (3201311001), we get a palindrome (4202442024).

The spelling of 1001131023 in words is "one billion, one million, one hundred thirty-one thousand, twenty-three".