31000130020011 has 16 divisors (see below), whose sum is σ = 41381266709120. Its totient is φ = 20642874416640.

The previous prime is 31000130020009. The next prime is 31000130020033. The reversal of 31000130020011 is 11002003100013.

It is not a de Polignac number, because 31000130020011 - 2¹ = 31000130020009 is a prime.

It is a super-2 number, since 2×31000130020011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31000130020511) 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, 144849000 + ... + 145062858.

It is an arithmetic number, because the mean of its divisors is an integer number (2586329169320).

Almost surely, 2^{31000130020011} is an apocalyptic number.

31000130020011 is a deficient number, since it is larger than the sum of its proper divisors (10381136689109).

31000130020011 is a wasteful number, since it uses less digits than its factorization.

31000130020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269466.

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

Adding to 31000130020011 its reverse (11002003100013), we get a palindrome (42002133120024).

The spelling of 31000130020011 in words is "thirty-one trillion, one hundred thirty million, twenty thousand, eleven".