1001433113231 has 4 divisors (see below), whose sum is σ = 1002705583032. Its totient is φ = 1000160643432.

The previous prime is 1001433113209. The next prime is 1001433113249. The reversal of 1001433113231 is 1323113341001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001433113231 - 2²⁶ = 1001366004367 is a prime.

It is a super-2 number, since 2×1001433113231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001433113197 and 1001433113206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001433133231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636233720 + ... + 636235293.

It is an arithmetic number, because the mean of its divisors is an integer number (250676395758).

Almost surely, 2^{1001433113231} is an apocalyptic number.

1001433113231 is a deficient number, since it is larger than the sum of its proper divisors (1272469801).

1001433113231 is an equidigital number, since it uses as much as digits as its factorization.

1001433113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272469800.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1001433113231 its reverse (1323113341001), we get a palindrome (2324546454232).

The spelling of 1001433113231 in words is "one trillion, one billion, four hundred thirty-three million, one hundred thirteen thousand, two hundred thirty-one".