523012330 has 16 divisors (see below), whose sum is σ = 942259464. Its totient is φ = 209018880.

The previous prime is 523012307. The next prime is 523012331. The reversal of 523012330 is 33210325.

It can be written as a sum of positive squares in 4 ways, for example, as 323892009 + 199120321 = 17997^2 + 14111^2 .

It is a junction number, because it is equal to n+sod(n) for n = 523012298 and 523012307.

It is not an unprimeable number, because it can be changed into a prime (523012331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11151 + ... + 34210.

Almost surely, 2^523012330 is an apocalyptic number.

523012330 is a deficient number, since it is larger than the sum of its proper divisors (419247134).

523012330 is a wasteful number, since it uses less digits than its factorization.

523012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46521.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 523012330 is about 22869.4628270976. The cubic root of 523012330 is about 805.6949517488.

Adding to 523012330 its reverse (33210325), we get a palindrome (556222655).

The spelling of 523012330 in words is "five hundred twenty-three million, twelve thousand, three hundred thirty".