1523321120 has 48 divisors (see below), whose sum is σ = 3617006400. Its totient is φ = 606253824.

The previous prime is 1523321101. The next prime is 1523321123. The reversal of 1523321120 is 211233251.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1523321092 and 1523321101.

It is not an unprimeable number, because it can be changed into a prime (1523321123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7919 + ... + 55761.

It is an arithmetic number, because the mean of its divisors is an integer number (75354300).

Almost surely, 2^1523321120 is an apocalyptic number.

1523321120 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 1523321120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1808503200).

1523321120 is an abundant number, since it is smaller than the sum of its proper divisors (2093685280).

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

1523321120 is a wasteful number, since it uses less digits than its factorization.

1523321120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48057 (or 48049 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1523321120 is about 39029.7466043529. The cubic root of 1523321120 is about 1150.6162091377.

Adding to 1523321120 its reverse (211233251), we get a palindrome (1734554371).

The spelling of 1523321120 in words is "one billion, five hundred twenty-three million, three hundred twenty-one thousand, one hundred twenty".