513120023 has 8 divisors (see below), whose sum is σ = 581674800. Its totient is φ = 448720128.

The previous prime is 513120019. The next prime is 513120031. The reversal of 513120023 is 320021315.

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 513120023 - 2² = 513120019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513119983 and 513120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513120073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1038458 + ... + 1038951.

It is an arithmetic number, because the mean of its divisors is an integer number (72709350).

Almost surely, 2^513120023 is an apocalyptic number.

513120023 is a deficient number, since it is larger than the sum of its proper divisors (68554777).

513120023 is a wasteful number, since it uses less digits than its factorization.

513120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077441.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 513120023 is about 22652.1527233065. The cubic root of 513120023 is about 800.5829204640.

Adding to 513120023 its reverse (320021315), we get a palindrome (833141338).

The spelling of 513120023 in words is "five hundred thirteen million, one hundred twenty thousand, twenty-three".