513146431 has 8 divisors (see below), whose sum is σ = 586702880. Its totient is φ = 439652448.

The previous prime is 513146383. The next prime is 513146437. The reversal of 513146431 is 134641315.

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 513146431 - 2¹³ = 513138239 is a prime.

It is a super-2 number, since 2×513146431² = 526638519296075522, 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 513146431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513146437) 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, 3565 + ... + 32233.

It is an arithmetic number, because the mean of its divisors is an integer number (73337860).

Almost surely, 2^513146431 is an apocalyptic number.

513146431 is a deficient number, since it is larger than the sum of its proper divisors (73556449).

513146431 is a wasteful number, since it uses less digits than its factorization.

513146431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31233.

The product of its digits is 4320, while the sum is 28.

The square root of 513146431 is about 22652.7356184634. The cubic root of 513146431 is about 800.5966543730.

Adding to 513146431 its reverse (134641315), we get a palindrome (647787746).

The spelling of 513146431 in words is "five hundred thirteen million, one hundred forty-six thousand, four hundred thirty-one".