1001131320203 has 32 divisors (see below), whose sum is σ = 1227468533760. Its totient is φ = 796969704960.

The previous prime is 1001131320197. The next prime is 1001131320257. The reversal of 1001131320203 is 3020231311001.

It is not a de Polignac number, because 1001131320203 - 2²⁰ = 1001130271627 is a prime.

It is a super-2 number, since 2×1001131320203² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1001131320263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17466650 + ... + 17523872.

It is an arithmetic number, because the mean of its divisors is an integer number (38358391680).

Almost surely, 2^{1001131320203} is an apocalyptic number.

1001131320203 is a deficient number, since it is larger than the sum of its proper divisors (226337213557).

1001131320203 is a wasteful number, since it uses less digits than its factorization.

1001131320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59187.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1001131320203 its reverse (3020231311001), we get a palindrome (4021362631204).

The spelling of 1001131320203 in words is "one trillion, one billion, one hundred thirty-one million, three hundred twenty thousand, two hundred three".