1031312212 has 72 divisors (see below), whose sum is σ = 2158621920. Its totient is φ = 429710400.

The previous prime is 1031312207. The next prime is 1031312281. The reversal of 1031312212 is 2122131301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1167523 + ... + 1168405.

It is an arithmetic number, because the mean of its divisors is an integer number (29980860).

Almost surely, 2^1031312212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031312212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079310960).

1031312212 is an abundant number, since it is smaller than the sum of its proper divisors (1127309708).

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

1031312212 is a wasteful number, since it uses less digits than its factorization.

1031312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1031312212 is about 32114.0500715808. The cubic root of 1031312212 is about 1010.3303209995.

Adding to 1031312212 its reverse (2122131301), we get a palindrome (3153443513).

The spelling of 1031312212 in words is "one billion, thirty-one million, three hundred twelve thousand, two hundred twelve".