1013320440 has 192 divisors, whose sum is σ = 3637146240. Its totient is φ = 242615040.

The previous prime is 1013320391. The next prime is 1013320487. The reversal of 1013320440 is 440233101.

1013320440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 327139 + ... + 330221.

It is an arithmetic number, because the mean of its divisors is an integer number (18943470).

Almost surely, 2^1013320440 is an apocalyptic number.

1013320440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1013320440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1818573120).

1013320440 is an abundant number, since it is smaller than the sum of its proper divisors (2623825800).

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

1013320440 is a wasteful number, since it uses less digits than its factorization.

1013320440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194 (or 3187 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1013320440 is about 31832.6945136600. The cubic root of 1013320440 is about 1004.4205763763.

Adding to 1013320440 its reverse (440233101), we get a palindrome (1453553541).

The spelling of 1013320440 in words is "one billion, thirteen million, three hundred twenty thousand, four hundred forty".