523380312 has 128 divisors (see below), whose sum is σ = 1789401600. Its totient is φ = 138029184.

The previous prime is 523380311. The next prime is 523380317. The reversal of 523380312 is 213083325.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523380311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6343 + ... + 32969.

It is an arithmetic number, because the mean of its divisors is an integer number (13979700).

Almost surely, 2^523380312 is an apocalyptic number.

523380312 is a gapful number since it is divisible by the number (52) 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 523380312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894700800).

523380312 is an abundant number, since it is smaller than the sum of its proper divisors (1266021288).

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

523380312 is a wasteful number, since it uses less digits than its factorization.

523380312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26662 (or 26652 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 523380312 is about 22877.5066823288. The cubic root of 523380312 is about 805.8838649075.

The spelling of 523380312 in words is "five hundred twenty-three million, three hundred eighty thousand, three hundred twelve".