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2030257513 = 4347215291
BaseRepresentation
bin111100100000011…
…0100010101101001
312020111021202201201
41321000310111221
513124221220023
6533243244201
7101211622054
oct17100642551
95214252651
102030257513
11952033579
12487b19661
1326480c60b
141538d3a9b
15bd38cbad
hex79034569

2030257513 has 4 divisors (see below), whose sum is σ = 2077472848. Its totient is φ = 1983042180.

The previous prime is 2030257507. The next prime is 2030257529. The reversal of 2030257513 is 3157520302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3157520302 = 21578760151.

It is not a de Polignac number, because 2030257513 - 29 = 2030257001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2030257583) 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, 23607603 + ... + 23607688.

It is an arithmetic number, because the mean of its divisors is an integer number (519368212).

Almost surely, 22030257513 is an apocalyptic number.

It is an amenable number.

2030257513 is a deficient number, since it is larger than the sum of its proper divisors (47215335).

2030257513 is an equidigital number, since it uses as much as digits as its factorization.

2030257513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47215334.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 2030257513 is about 45058.3789433220. The cubic root of 2030257513 is about 1266.2429550101.

Adding to 2030257513 its reverse (3157520302), we get a palindrome (5187777815).

It can be divided in two parts, 20302 and 57513, that added together give a triangular number (77815 = T394).

The spelling of 2030257513 in words is "two billion, thirty million, two hundred fifty-seven thousand, five hundred thirteen".

Divisors: 1 43 47215291 2030257513