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2013303031 = 17891125379
BaseRepresentation
bin111100000000000…
…1001000011110111
312012022101101112221
41320000021003313
513110401144111
6531440023211
7100614536065
oct17000110367
95168341487
102013303031
11943503403
12482301b07
1326115448c
1415155d035
15bbb3e371
hex780090f7

2013303031 has 4 divisors (see below), whose sum is σ = 2014430200. Its totient is φ = 2012175864.

The previous prime is 2013303011. The next prime is 2013303067. The reversal of 2013303031 is 1303033102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2013303031 - 27 = 2013302903 is a prime.

It is a super-4 number, since 4×20133030314 (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013302996 and 2013303014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013303011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560901 + ... + 564478.

It is an arithmetic number, because the mean of its divisors is an integer number (503607550).

Almost surely, 22013303031 is an apocalyptic number.

2013303031 is a deficient number, since it is larger than the sum of its proper divisors (1127169).

2013303031 is a wasteful number, since it uses less digits than its factorization.

2013303031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127168.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 2013303031 is about 44869.8454532663. The cubic root of 2013303031 is about 1262.7083405609.

Adding to 2013303031 its reverse (1303033102), we get a palindrome (3316336133).

The spelling of 2013303031 in words is "two billion, thirteen million, three hundred three thousand, thirty-one".

Divisors: 1 1789 1125379 2013303031