1031120440 has 64 divisors (see below), whose sum is σ = 2723140800. Its totient is φ = 343968768.

The previous prime is 1031120437. The next prime is 1031120473. The reversal of 1031120440 is 440211301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39405 + ... + 60124.

It is an arithmetic number, because the mean of its divisors is an integer number (42549075).

Almost surely, 2^1031120440 is an apocalyptic number.

1031120440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031120440 is an abundant number, since it is smaller than the sum of its proper divisors (1692020360).

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

1031120440 is a wasteful number, since it uses less digits than its factorization.

1031120440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99584 (or 99580 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1031120440 is about 32111.0641368361. The cubic root of 1031120440 is about 1010.2676936416.

Adding to 1031120440 its reverse (440211301), we get a palindrome (1471331741).

The spelling of 1031120440 in words is "one billion, thirty-one million, one hundred twenty thousand, four hundred forty".