1001311120031 has 4 divisors (see below), whose sum is σ = 1024597425192. Its totient is φ = 978024814872.

The previous prime is 1001311120009. The next prime is 1001311120063. The reversal of 1001311120031 is 1300211131001.

It is a happy number.

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 1001311120031 - 2¹⁴ = 1001311103647 is a prime.

It is a super-2 number, since 2×1001311120031² (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 = 1001311119988 and 1001311120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001311120631) 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, 11643152516 + ... + 11643152601.

It is an arithmetic number, because the mean of its divisors is an integer number (256149356298).

Almost surely, 2^{1001311120031} is an apocalyptic number.

1001311120031 is a deficient number, since it is larger than the sum of its proper divisors (23286305161).

1001311120031 is an equidigital number, since it uses as much as digits as its factorization.

1001311120031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23286305160.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1001311120031 its reverse (1300211131001), we get a palindrome (2301522251032).

The spelling of 1001311120031 in words is "one trillion, one billion, three hundred eleven million, one hundred twenty thousand, thirty-one".