523312020 has 288 divisors, whose sum is σ = 2096430336. Its totient is φ = 102297600.

The previous prime is 523312019. The next prime is 523312033. The reversal of 523312020 is 20213325.

523312020 is a `hidden beast` number, since 523 + 3 + 120 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 523311984 and 523312002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 234510 + ... + 236730.

It is an arithmetic number, because the mean of its divisors is an integer number (7279272).

Almost surely, 2^523312020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523312020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048215168).

523312020 is an abundant number, since it is smaller than the sum of its proper divisors (1573118316).

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

523312020 is a wasteful number, since it uses less digits than its factorization.

523312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271 (or 2266 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 523312020 is about 22876.0140758831. The cubic root of 523312020 is about 805.8488121211.

Adding to 523312020 its reverse (20213325), we get a palindrome (543525345).

The spelling of 523312020 in words is "five hundred twenty-three million, three hundred twelve thousand, twenty".