513124023 has 8 divisors (see below), whose sum is σ = 684276736. Its totient is φ = 342027000.

The previous prime is 513123967. The next prime is 513124049. The reversal of 513124023 is 320421315.

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

It is not a de Polignac number, because 513124023 - 2¹² = 513119927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513124063) 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, 18108 + ... + 36798.

It is an arithmetic number, because the mean of its divisors is an integer number (85534592).

Almost surely, 2^513124023 is an apocalyptic number.

513124023 is a deficient number, since it is larger than the sum of its proper divisors (171152713).

513124023 is a wasteful number, since it uses less digits than its factorization.

513124023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27845.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 513124023 is about 22652.2410149636. The cubic root of 513124023 is about 800.5850007592.

Adding to 513124023 its reverse (320421315), we get a palindrome (833545338).

The spelling of 513124023 in words is "five hundred thirteen million, one hundred twenty-four thousand, twenty-three".