31020011021011 has 8 divisors (see below), whose sum is σ = 31039148448000. Its totient is φ = 31000879500360.

The previous prime is 31020011021009. The next prime is 31020011021039. The reversal of 31020011021011 is 11012011002013.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31020011021011 - 2¹ = 31020011021009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31020011020982 and 31020011021000.

It is not an unprimeable number, because it can be changed into a prime (31020011021711) 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, 9053770 + ... + 12000448.

It is an arithmetic number, because the mean of its divisors is an integer number (3879893556000).

Almost surely, 2^{31020011021011} is an apocalyptic number.

31020011021011 is a deficient number, since it is larger than the sum of its proper divisors (19137426989).

31020011021011 is a wasteful number, since it uses less digits than its factorization.

31020011021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953169.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 31020011021011 its reverse (11012011002013), we get a palindrome (42032022023024).

The spelling of 31020011021011 in words is "thirty-one trillion, twenty billion, eleven million, twenty-one thousand, eleven".