1031111112 has 16 divisors (see below), whose sum is σ = 2577777840. Its totient is φ = 343703696.

The previous prime is 1031111111. The next prime is 1031111113. The reversal of 1031111112 is 2111111301.

1031111112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1031111111) and next prime (1031111113).

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

It is not an unprimeable number, because it can be changed into a prime (1031111111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21481458 + ... + 21481505.

It is an arithmetic number, because the mean of its divisors is an integer number (161111115).

Almost surely, 2^1031111112 is an apocalyptic number.

1031111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1031111112 is an abundant number, since it is smaller than the sum of its proper divisors (1546666728).

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

1031111112 is a wasteful number, since it uses less digits than its factorization.

1031111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42962972 (or 42962968 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 1031111112 is about 32110.9188906204. The cubic root of 1031111112 is about 1010.2646471803.

Adding to 1031111112 its reverse (2111111301), we get a palindrome (3142222413).

The spelling of 1031111112 in words is "one billion, thirty-one million, one hundred eleven thousand, one hundred twelve".