1001311120231 has 16 divisors (see below), whose sum is σ = 1060677273600. Its totient is φ = 943270577568.

The previous prime is 1001311120189. The next prime is 1001311120237. The reversal of 1001311120231 is 1320211131001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1001311120231 - 2³⁹ = 451555306343 is a prime.

It is a super-2 number, since 2×1001311120231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001311120237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7078665 + ... + 7218733.

It is an arithmetic number, because the mean of its divisors is an integer number (66292329600).

Almost surely, 2^{1001311120231} is an apocalyptic number.

1001311120231 is a deficient number, since it is larger than the sum of its proper divisors (59366153369).

1001311120231 is a wasteful number, since it uses less digits than its factorization.

1001311120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144798.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1001311120231 its reverse (1320211131001), we get a palindrome (2321522251232).

The spelling of 1001311120231 in words is "one trillion, one billion, three hundred eleven million, one hundred twenty thousand, two hundred thirty-one".