513251213 has 8 divisors (see below), whose sum is σ = 516121632. Its totient is φ = 510389296.

The previous prime is 513251209. The next prime is 513251231. The reversal of 513251213 is 312152315.

It is a happy number.

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 513251213 - 2² = 513251209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513251203) 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, 146306 + ... + 149772.

It is an arithmetic number, because the mean of its divisors is an integer number (64515204).

Almost surely, 2^513251213 is an apocalyptic number.

It is an amenable number.

513251213 is a deficient number, since it is larger than the sum of its proper divisors (2870419).

513251213 is a wasteful number, since it uses less digits than its factorization.

513251213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251.

The product of its digits is 900, while the sum is 23.

The square root of 513251213 is about 22655.0482895093. The cubic root of 513251213 is about 800.6511433092.

The spelling of 513251213 in words is "five hundred thirteen million, two hundred fifty-one thousand, two hundred thirteen".