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2443220431 = 19144788867
BaseRepresentation
bin1001000110100000…
…1001010111001111
320022021100110100121
42101220021113033
520000431023211
61042234405411
7114355013431
oct22150112717
96267313317
102443220431
111044152743
12582290867
132cc23c282
141926b0651
15e4762271
hex91a095cf

2443220431 has 8 divisors (see below), whose sum is σ = 2573617280. Its totient is φ = 2313004248.

The previous prime is 2443220413. The next prime is 2443220473. The reversal of 2443220431 is 1340223442.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2443220431 - 27 = 2443220303 is a prime.

It is a super-2 number, since 2×24432204312 = 11938652148911651522, 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 = 2443220396 and 2443220405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443220231) 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, 16941 + ... + 71926.

It is an arithmetic number, because the mean of its divisors is an integer number (321702160).

Almost surely, 22443220431 is an apocalyptic number.

2443220431 is a deficient number, since it is larger than the sum of its proper divisors (130396849).

2443220431 is a wasteful number, since it uses less digits than its factorization.

2443220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90333.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2443220431 is about 49428.9432519045. The cubic root of 2443220431 is about 1346.8551269660.

Adding to 2443220431 its reverse (1340223442), we get a palindrome (3783443873).

The spelling of 2443220431 in words is "two billion, four hundred forty-three million, two hundred twenty thousand, four hundred thirty-one".

Divisors: 1 19 1447 27493 88867 1688473 128590549 2443220431