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2440030031 = 22871066913
BaseRepresentation
bin1001000101101111…
…1110011101001111
320022001100100221122
42101123332131033
514444121430111
61042042151155
7114315625115
oct22133763517
96261310848
102440030031
11104237374a
125811b24bb
132cb69306a
141920bdab5
15e4331cdb
hex916fe74f

2440030031 has 4 divisors (see below), whose sum is σ = 2441099232. Its totient is φ = 2438960832.

The previous prime is 2440030001. The next prime is 2440030081. The reversal of 2440030031 is 1300300442.

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 2440030031 - 218 = 2439767887 is a prime.

It is a super-2 number, since 2×24400300312 = 11907493104363721922, 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 = 2440029991 and 2440030009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440030001) 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, 531170 + ... + 535743.

It is an arithmetic number, because the mean of its divisors is an integer number (610274808).

Almost surely, 22440030031 is an apocalyptic number.

2440030031 is a deficient number, since it is larger than the sum of its proper divisors (1069201).

2440030031 is a wasteful number, since it uses less digits than its factorization.

2440030031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069200.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2440030031 is about 49396.6601198907. The cubic root of 2440030031 is about 1346.2686226035.

Adding to 2440030031 its reverse (1300300442), we get a palindrome (3740330473).

The spelling of 2440030031 in words is "two billion, four hundred forty million, thirty thousand, thirty-one".

Divisors: 1 2287 1066913 2440030031