512203681 has 16 divisors (see below), whose sum is σ = 565305408. Its totient is φ = 460224000.

The previous prime is 512203673. The next prime is 512203687. The reversal of 512203681 is 186302215.

It is a cyclic number.

It is not a de Polignac number, because 512203681 - 2³ = 512203673 is a prime.

It is a super-2 number, since 2×512203681² = 524705221659899522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512203687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425881 + ... + 427081.

It is an arithmetic number, because the mean of its divisors is an integer number (35331588).

Almost surely, 2^512203681 is an apocalyptic number.

It is an amenable number.

512203681 is a deficient number, since it is larger than the sum of its proper divisors (53101727).

512203681 is a wasteful number, since it uses less digits than its factorization.

512203681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 512203681 is about 22631.9173072013. The cubic root of 512203681 is about 800.1060697900.

Adding to 512203681 its reverse (186302215), we get a palindrome (698505896).

The spelling of 512203681 in words is "five hundred twelve million, two hundred three thousand, six hundred eighty-one".