2031111012 has 48 divisors (see below), whose sum is σ = 5443558400. Its totient is φ = 577396512.

The previous prime is 2031111007. The next prime is 2031111029. The reversal of 2031111012 is 2101111302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44038 + ... + 77469.

Almost surely, 2^2031111012 is an apocalyptic number.

It is an amenable number.

2031111012 is an abundant number, since it is smaller than the sum of its proper divisors (3412447388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2031111012 is a wasteful number, since it uses less digits than its factorization.

2031111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121720 (or 121718 counting only the distinct ones).

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

The square root of 2031111012 is about 45067.8489835049. The cubic root of 2031111012 is about 1266.4203685781.

Adding to 2031111012 its reverse (2101111302), we get a palindrome (4132222314).

The spelling of 2031111012 in words is "two billion, thirty-one million, one hundred eleven thousand, twelve".