1320233020 has 24 divisors (see below), whose sum is σ = 2773293264. Its totient is φ = 527940096.

The previous prime is 1320232967. The next prime is 1320233023. The reversal of 1320233020 is 203320231.

It is a junction number, because it is equal to n+sod(n) for n = 1320232985 and 1320233003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320233023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82947 + ... + 97573.

It is an arithmetic number, because the mean of its divisors is an integer number (115553886).

Almost surely, 2^1320233020 is an apocalyptic number.

1320233020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320233020 is an abundant number, since it is smaller than the sum of its proper divisors (1453060244).

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

1320233020 is a wasteful number, since it uses less digits than its factorization.

1320233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19149 (or 19147 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1320233020 is about 36335.0109398635. The cubic root of 1320233020 is about 1097.0258556595.

Adding to 1320233020 its reverse (203320231), we get a palindrome (1523553251).

The spelling of 1320233020 in words is "one billion, three hundred twenty million, two hundred thirty-three thousand, twenty".