513434731 has 8 divisors (see below), whose sum is σ = 545562864. Its totient is φ = 481520640.

The previous prime is 513434693. The next prime is 513434737. The reversal of 513434731 is 137434315.

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 513434731 - 2⁹ = 513434219 is a prime.

It is a super-3 number, since 3×513434731³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513434693 and 513434702.

It is not an unprimeable number, because it can be changed into a prime (513434737) 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, 48550 + ... + 58171.

It is an arithmetic number, because the mean of its divisors is an integer number (68195358).

Almost surely, 2^513434731 is an apocalyptic number.

513434731 is a deficient number, since it is larger than the sum of its proper divisors (32128133).

513434731 is a wasteful number, since it uses less digits than its factorization.

513434731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107021.

The product of its digits is 15120, while the sum is 31.

The square root of 513434731 is about 22659.0981947649. The cubic root of 513434731 is about 800.7465588249.

The spelling of 513434731 in words is "five hundred thirteen million, four hundred thirty-four thousand, seven hundred thirty-one".