520231612 has 6 divisors (see below), whose sum is σ = 910405328. Its totient is φ = 260115804.

The previous prime is 520231601. The next prime is 520231643. The reversal of 520231612 is 216132025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65028948 + ... + 65028955.

Almost surely, 2^520231612 is an apocalyptic number.

It is an amenable number.

520231612 is a deficient number, since it is larger than the sum of its proper divisors (390173716).

520231612 is a wasteful number, since it uses less digits than its factorization.

520231612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130057907 (or 130057905 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 520231612 is about 22808.5863656650. The cubic root of 520231612 is about 804.2645248084.

Adding to 520231612 its reverse (216132025), we get a palindrome (736363637).

It can be divided in two parts, 52023 and 1612, that added together give a palindrome (53635).

The spelling of 520231612 in words is "five hundred twenty million, two hundred thirty-one thousand, six hundred twelve".