12020011031 has 16 divisors (see below), whose sum is σ = 14594936640. Its totient is φ = 9678735360.

The previous prime is 12020011019. The next prime is 12020011051. The reversal of 12020011031 is 13011002021.

It is not a de Polignac number, because 12020011031 - 2¹⁰ = 12020010007 is a prime.

It is a super-2 number, since 2×12020011031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020011051) 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, 792650 + ... + 807671.

It is an arithmetic number, because the mean of its divisors is an integer number (912183540).

Almost surely, 2^12020011031 is an apocalyptic number.

12020011031 is a deficient number, since it is larger than the sum of its proper divisors (2574925609).

12020011031 is a wasteful number, since it uses less digits than its factorization.

12020011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600394.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12020011031 its reverse (13011002021), we get a palindrome (25031013052).

The spelling of 12020011031 in words is "twelve billion, twenty million, eleven thousand, thirty-one".