523320012 has 36 divisors (see below), whose sum is σ = 1380353520. Its totient is φ = 166855392.

The previous prime is 523320001. The next prime is 523320041. The reversal of 523320012 is 210023325.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315187 + ... + 316842.

Almost surely, 2^523320012 is an apocalyptic number.

It is an amenable number.

523320012 is an abundant number, since it is smaller than the sum of its proper divisors (857033508).

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

523320012 is a wasteful number, since it uses less digits than its factorization.

523320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632062 (or 632057 counting only the distinct ones).

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

The square root of 523320012 is about 22876.1887559969. The cubic root of 523320012 is about 805.8529143971.

Adding to 523320012 its reverse (210023325), we get a palindrome (733343337).

The spelling of 523320012 in words is "five hundred twenty-three million, three hundred twenty thousand, twelve".