1031212312 has 48 divisors (see below), whose sum is σ = 2108160000. Its totient is φ = 472657536.

The previous prime is 1031212297. The next prime is 1031212313. The reversal of 1031212312 is 2132121301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031212313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198889 + ... + 204007.

It is an arithmetic number, because the mean of its divisors is an integer number (43920000).

Almost surely, 2^1031212312 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 1031212312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054080000).

1031212312 is an abundant number, since it is smaller than the sum of its proper divisors (1076947688).

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

1031212312 is a wasteful number, since it uses less digits than its factorization.

1031212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300 (or 5283 counting only the distinct ones).

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

The square root of 1031212312 is about 32112.4946399373. The cubic root of 1031212312 is about 1010.2976974295.

Adding to 1031212312 its reverse (2132121301), we get a palindrome (3163333613).

The spelling of 1031212312 in words is "one billion, thirty-one million, two hundred twelve thousand, three hundred twelve".