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3440244231 = 3455577643
BaseRepresentation
bin1100110100001101…
…1111011000000111
322212202102111220000
43031003133120013
524021200303411
61325212212343
7151152410364
oct31503373007
98782374800
103440244231
111505a23456
1280016a0b3
1342a976898
14248c8546b
15152056956
hexcd0df607

3440244231 has 20 divisors (see below), whose sum is σ = 5140727592. Its totient is φ = 2292783408.

The previous prime is 3440244229. The next prime is 3440244239. The reversal of 3440244231 is 1324420443.

It is a happy number.

It is not a de Polignac number, because 3440244231 - 21 = 3440244229 is a prime.

It is a super-2 number, since 2×34402442312 = 23670560737857562722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3440244195 and 3440244204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440244239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 446296 + ... + 453938.

Almost surely, 23440244231 is an apocalyptic number.

3440244231 is a deficient number, since it is larger than the sum of its proper divisors (1700483361).

3440244231 is an equidigital number, since it uses as much as digits as its factorization.

3440244231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13212 (or 13203 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 3440244231 is about 58653.5952095010. The cubic root of 3440244231 is about 1509.6041871492.

Adding to 3440244231 its reverse (1324420443), we get a palindrome (4764664674).

The spelling of 3440244231 in words is "three billion, four hundred forty million, two hundred forty-four thousand, two hundred thirty-one".

Divisors: 1 3 9 27 81 5557 7643 16671 22929 50013 68787 150039 206361 450117 619083 42472151 127416453 382249359 1146748077 3440244231