513031228 has 24 divisors (see below), whose sum is σ = 944002080. Its totient is φ = 243606720.

The previous prime is 513031223. The next prime is 513031229. The reversal of 513031228 is 822130315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513031223) 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, 29176 + ... + 43327.

It is an arithmetic number, because the mean of its divisors is an integer number (39333420).

Almost surely, 2^513031228 is an apocalyptic number.

513031228 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

513031228 is a deficient number, since it is larger than the sum of its proper divisors (430970852).

513031228 is a wasteful number, since it uses less digits than its factorization.

513031228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72597 (or 72595 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 513031228 is about 22650.1926702622. The cubic root of 513031228 is about 800.5367377269.

The spelling of 513031228 in words is "five hundred thirteen million, thirty-one thousand, two hundred twenty-eight".