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143234031 = 3791993037
BaseRepresentation
bin10001000100110…
…01001111101111
3100222112001011010
420202121033233
5243131442111
622114000303
73356316633
oct1042311757
9328461133
10143234031
1173940936
123bb76093
13238a0385
1415046dc3
15c894aa6
hex88993ef

143234031 has 16 divisors (see below), whose sum is σ = 194432000. Its totient is φ = 93775968.

The previous prime is 143234023. The next prime is 143234053. The reversal of 143234031 is 130432341.

Adding to 143234031 its reverse (130432341), we get a palindrome (273666372).

It can be divided in two parts, 143 and 234031, that multiplied together give a palindrome (33466433).

It is not a de Polignac number, because 143234031 - 23 = 143234023 is a prime.

It is a super-2 number, since 2×1432340312 = 41031975273017922, 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 = 143233989 and 143234007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143234011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45645 + ... + 48681.

It is an arithmetic number, because the mean of its divisors is an integer number (12152000).

Almost surely, 2143234031 is an apocalyptic number.

143234031 is a deficient number, since it is larger than the sum of its proper divisors (51197969).

143234031 is a wasteful number, since it uses less digits than its factorization.

143234031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 143234031 is about 11968.0420704474. The cubic root of 143234031 is about 523.2172712001.

The spelling of 143234031 in words is "one hundred forty-three million, two hundred thirty-four thousand, thirty-one".

Divisors: 1 3 79 199 237 597 3037 9111 15721 47163 239923 604363 719769 1813089 47744677 143234031