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143431404 = 223234711057
BaseRepresentation
bin10001000110010…
…01011011101100
3100222220001220020
420203021123230
5243204301104
622122122140
73361101234
oct1043113354
9328801806
10143431404
1173a66156
1240050350
132393c16c
1415098cc4
15c8d32d9
hex88c96ec

143431404 has 48 divisors (see below), whose sum is σ = 356686848. Its totient is φ = 44754688.

The previous prime is 143431403. The next prime is 143431429. The reversal of 143431404 is 404134341.

It is a super-2 number, since 2×1434314042 = 41145135306822432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (143431403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7444 + ... + 18500.

It is an arithmetic number, because the mean of its divisors is an integer number (7430976).

Almost surely, 2143431404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143431404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178343424).

143431404 is an abundant number, since it is smaller than the sum of its proper divisors (213255444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143431404 is a wasteful number, since it uses less digits than its factorization.

143431404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11134 (or 11132 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 143431404 is about 11976.2850667475. The cubic root of 143431404 is about 523.4574877744.

Adding to 143431404 its reverse (404134341), we get a palindrome (547565745).

The spelling of 143431404 in words is "one hundred forty-three million, four hundred thirty-one thousand, four hundred four".

Divisors: 1 2 3 4 6 12 23 46 47 69 92 94 138 141 188 276 282 564 1081 2162 3243 4324 6486 11057 12972 22114 33171 44228 66342 132684 254311 508622 519679 762933 1017244 1039358 1525866 1559037 2078716 3051732 3118074 6236148 11952617 23905234 35857851 47810468 71715702 143431404