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2013240031 = 11983186187
BaseRepresentation
bin111011111111111…
…1001101011011111
312012022021012010121
41313333321223133
513110342140111
6531434415411
7100614154315
oct16777715337
95168235117
102013240031
11943470040
12482291567
132611318ba
141515440b5
15bbb2a871
hex77ff9adf

2013240031 has 8 divisors (see below), whose sum is σ = 2198507904. Its totient is φ = 1828346520.

The previous prime is 2013240023. The next prime is 2013240077. The reversal of 2013240031 is 1300423102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2013240031 - 23 = 2013240023 is a prime.

It is a super-2 number, since 2×20132400312 = 8106270844841761922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013239987 and 2013240014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013240731) 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, 82281 + ... + 103906.

It is an arithmetic number, because the mean of its divisors is an integer number (274813488).

Almost surely, 22013240031 is an apocalyptic number.

2013240031 is a deficient number, since it is larger than the sum of its proper divisors (185267873).

2013240031 is a wasteful number, since it uses less digits than its factorization.

2013240031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187181.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2013240031 is about 44869.1434172751. The cubic root of 2013240031 is about 1262.6951695920.

Adding to 2013240031 its reverse (1300423102), we get a palindrome (3313663133).

The spelling of 2013240031 in words is "two billion, thirteen million, two hundred forty thousand, thirty-one".

Divisors: 1 11 983 10813 186187 2048057 183021821 2013240031