1523212423320 has 256 divisors, whose sum is σ = 5361581030400. Its totient is φ = 338924298240.

The previous prime is 1523212423307. The next prime is 1523212423363. The reversal of 1523212423320 is 233242123251.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15690691 + ... + 15787469.

It is an arithmetic number, because the mean of its divisors is an integer number (20943675900).

Almost surely, 2^{1523212423320} is an apocalyptic number.

1523212423320 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 1523212423320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2680790515200).

1523212423320 is an abundant number, since it is smaller than the sum of its proper divisors (3838368607080).

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

1523212423320 is a wasteful number, since it uses less digits than its factorization.

1523212423320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97298 (or 97294 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 1523212423320 its reverse (233242123251), we get a palindrome (1756454546571).

The spelling of 1523212423320 in words is "one trillion, five hundred twenty-three billion, two hundred twelve million, four hundred twenty-three thousand, three hundred twenty".