1101020320 has 48 divisors (see below), whose sum is σ = 2603155968. Its totient is φ = 440070400.

The previous prime is 1101020311. The next prime is 1101020339. The reversal of 1101020320 is 230201011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1101020297 and 1101020306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374697 + ... + 377623.

It is an arithmetic number, because the mean of its divisors is an integer number (54232416).

Almost surely, 2^1101020320 is an apocalyptic number.

1101020320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101020320 is an abundant number, since it is smaller than the sum of its proper divisors (1502135648).

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

1101020320 is a wasteful number, since it uses less digits than its factorization.

1101020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293 (or 5285 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1101020320 is about 33181.6262410389. The cubic root of 1101020320 is about 1032.5991853234.

Adding to 1101020320 its reverse (230201011), we get a palindrome (1331221331).

The spelling of 1101020320 in words is "one billion, one hundred one million, twenty thousand, three hundred twenty".