1031449391812 has 96 divisors (see below), whose sum is σ = 2248552051200. Its totient is φ = 412363929600.

The previous prime is 1031449391807. The next prime is 1031449391821. The reversal of 1031449391812 is 2181939441301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2439937 + ... + 2831287.

It is an arithmetic number, because the mean of its divisors is an integer number (23422417200).

Almost surely, 2^{1031449391812} 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 1031449391812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124276025600).

1031449391812 is an abundant number, since it is smaller than the sum of its proper divisors (1217102659388).

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

1031449391812 is a wasteful number, since it uses less digits than its factorization.

1031449391812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391506 (or 391490 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 1031449391812 in words is "one trillion, thirty-one billion, four hundred forty-nine million, three hundred ninety-one thousand, eight hundred twelve".