31011221010011 has 8 divisors (see below), whose sum is σ = 35301310873344. Its totient is φ = 26966279138920.

The previous prime is 31011221009987. The next prime is 31011221010019. The reversal of 31011221010011 is 11001012211013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31011221010011 - 2³⁰ = 31010147268187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31011221010019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61286997791 + ... + 61286998296.

It is an arithmetic number, because the mean of its divisors is an integer number (4412663859168).

Almost surely, 2^{31011221010011} is an apocalyptic number.

31011221010011 is a deficient number, since it is larger than the sum of its proper divisors (4290089863333).

31011221010011 is a wasteful number, since it uses less digits than its factorization.

31011221010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122573996121.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 31011221010011 its reverse (11001012211013), we get a palindrome (42012233221024).

The spelling of 31011221010011 in words is "thirty-one trillion, eleven billion, two hundred twenty-one million, ten thousand, eleven".