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1443144031 = 7319229967
BaseRepresentation
bin101011000000100…
…1010000101011111
310201120112022102221
41112001022011133
510423421102111
6355111330211
750522344000
oct12601120537
93646468387
101443144031
1168068751a
12343380967
1319cca63a4
14d99431a7
1586a68371
hex5604a15f

1443144031 has 32 divisors (see below), whose sum is σ = 1781120000. Its totient is φ = 1165552416.

The previous prime is 1443144019. The next prime is 1443144047. The reversal of 1443144031 is 1304413441.

It is not a de Polignac number, because 1443144031 - 27 = 1443143903 is a prime.

It is a super-2 number, since 2×14431440312 = 4165329388421857922, 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 = 1443143987 and 1443144005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443144061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1491910 + ... + 1492876.

It is an arithmetic number, because the mean of its divisors is an integer number (55660000).

Almost surely, 21443144031 is an apocalyptic number.

1443144031 is a deficient number, since it is larger than the sum of its proper divisors (337975969).

1443144031 is an equidigital number, since it uses as much as digits as its factorization.

1443144031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1443144031 is about 37988.7355804323. The cubic root of 1443144031 is about 1130.0644834896.

Adding to 1443144031 its reverse (1304413441), we get a palindrome (2747557472).

The spelling of 1443144031 in words is "one billion, four hundred forty-three million, one hundred forty-four thousand, thirty-one".

Divisors: 1 7 19 49 133 229 343 931 967 1603 4351 6517 6769 11221 18373 30457 47383 78547 128611 213199 221443 331681 900277 1492393 1550101 4207417 6301939 10850707 29451919 75954949 206163433 1443144031