1031213112 has 16 divisors (see below), whose sum is σ = 2578032840. Its totient is φ = 343737696.

The previous prime is 1031213101. The next prime is 1031213123. The reversal of 1031213112 is 2113121301.

It is a happy number.

1031213112 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 (1031213101) and next prime (1031213123).

It is a junction number, because it is equal to n+sod(n) for n = 1031213091 and 1031213100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21483583 + ... + 21483630.

Almost surely, 2^1031213112 is an apocalyptic number.

1031213112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1031213112 is an abundant number, since it is smaller than the sum of its proper divisors (1546819728).

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

1031213112 is a wasteful number, since it uses less digits than its factorization.

1031213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42967222 (or 42967218 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1031213112 is about 32112.5070961456. The cubic root of 1031213112 is about 1010.2979586877.

Adding to 1031213112 its reverse (2113121301), we get a palindrome (3144334413).

The spelling of 1031213112 in words is "one billion, thirty-one million, two hundred thirteen thousand, one hundred twelve".