Search a number
-
+
2013222031 = 4346819117
BaseRepresentation
bin111011111111111…
…0101010010001111
312012022020021102221
41313333311102033
513110341101111
6531434200211
7100614050662
oct16777652217
95168207387
102013222031
11943458567
12482283067
13261126652
1415153b6d9
15bbb25371
hex77ff548f

2013222031 has 4 divisors (see below), whose sum is σ = 2060041192. Its totient is φ = 1966402872.

The previous prime is 2013222019. The next prime is 2013222037. The reversal of 2013222031 is 1302223102.

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 2013222031 - 25 = 2013221999 is a prime.

It is a super-2 number, since 2×20132220312 = 8106125892207529922, 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 = 2013221996 and 2013222014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013222037) 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, 23409516 + ... + 23409601.

It is an arithmetic number, because the mean of its divisors is an integer number (515010298).

Almost surely, 22013222031 is an apocalyptic number.

2013222031 is a deficient number, since it is larger than the sum of its proper divisors (46819161).

2013222031 is an equidigital number, since it uses as much as digits as its factorization.

2013222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46819160.

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

The square root of 2013222031 is about 44868.9428335458. The cubic root of 2013222031 is about 1262.6914064075.

Adding to 2013222031 its reverse (1302223102), we get a palindrome (3315445133).

The spelling of 2013222031 in words is "two billion, thirteen million, two hundred twenty-two thousand, thirty-one".

Divisors: 1 43 46819117 2013222031