1031113320 has 128 divisors (see below), whose sum is σ = 3237719040. Its totient is φ = 262379520.

The previous prime is 1031113313. The next prime is 1031113339. The reversal of 1031113320 is 233111301.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1031113320.

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, 269662 + ... + 273458.

It is an arithmetic number, because the mean of its divisors is an integer number (25294680).

Almost surely, 2^1031113320 is an apocalyptic number.

1031113320 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 1031113320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618859520).

1031113320 is an abundant number, since it is smaller than the sum of its proper divisors (2206605720).

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

1031113320 is a wasteful number, since it uses less digits than its factorization.

1031113320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915 (or 3911 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1031113320 is about 32110.9532714306. The cubic root of 1031113320 is about 1010.2653682997.

Adding to 1031113320 its reverse (233111301), we get a palindrome (1264224621).

The spelling of 1031113320 in words is "one billion, thirty-one million, one hundred thirteen thousand, three hundred twenty".