513098023 has 4 divisors (see below), whose sum is σ = 521509528. Its totient is φ = 504686520.

The previous prime is 513098011. The next prime is 513098077. The reversal of 513098023 is 320890315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320890315 = 5 ⋅64178063.

It is a cyclic number.

It is not a de Polignac number, because 513098023 - 2¹³ = 513089831 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 (513098423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4205661 + ... + 4205782.

It is an arithmetic number, because the mean of its divisors is an integer number (130377382).

Almost surely, 2^513098023 is an apocalyptic number.

513098023 is a deficient number, since it is larger than the sum of its proper divisors (8411505).

513098023 is an equidigital number, since it uses as much as digits as its factorization.

513098023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411504.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 513098023 is about 22651.6671130405. The cubic root of 513098023 is about 800.5714786472.

The spelling of 513098023 in words is "five hundred thirteen million, ninety-eight thousand, twenty-three".