1020312444 has 48 divisors (see below), whose sum is σ = 2456886656. Its totient is φ = 329313600.

The previous prime is 1020312439. The next prime is 1020312451. The reversal of 1020312444 is 4442130201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020312444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88239 + ... + 99129.

Almost surely, 2^1020312444 is an apocalyptic number.

It is an amenable number.

1020312444 is an abundant number, since it is smaller than the sum of its proper divisors (1436574212).

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

1020312444 is a wasteful number, since it uses less digits than its factorization.

1020312444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11146 (or 11144 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1020312444 is about 31942.3299713718. The cubic root of 1020312444 is about 1006.7254811672.

Adding to 1020312444 its reverse (4442130201), we get a palindrome (5462442645).

The spelling of 1020312444 in words is "one billion, twenty million, three hundred twelve thousand, four hundred forty-four".