513425231 has 8 divisors (see below), whose sum is σ = 560265984. Its totient is φ = 466612120.

The previous prime is 513425219. The next prime is 513425249. The reversal of 513425231 is 132524315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513425231 - 2⁶ = 513425167 is a prime.

It is a super-2 number, since 2×513425231² = 527210935654806722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513425231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513425261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60980 + ... + 68886.

It is an arithmetic number, because the mean of its divisors is an integer number (70033248).

Almost surely, 2^513425231 is an apocalyptic number.

513425231 is a deficient number, since it is larger than the sum of its proper divisors (46840753).

513425231 is a wasteful number, since it uses less digits than its factorization.

513425231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13821.

The product of its digits is 3600, while the sum is 26.

The square root of 513425231 is about 22658.8885649760. Note that the first 3 decimals coincide. The cubic root of 513425231 is about 800.7416200996.

Adding to 513425231 its reverse (132524315), we get a palindrome (645949546).

The spelling of 513425231 in words is "five hundred thirteen million, four hundred twenty-five thousand, two hundred thirty-one".