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143113123231 = 1397113491771
BaseRepresentation
bin1000010101001000110…
…1001111010110011111
3111200101210120220222121
42011102031033112133
54321043424420411
6145424550523411
713224322322221
oct2052215172637
9450353526877
10143113123231
115576a699761
12238a0366567
1310659833350
146cd8c80411
153ac91ad571
hex215234f59f

143113123231 has 8 divisors (see below), whose sum is σ = 155710711184. Its totient is φ = 130742519040.

The previous prime is 143113123211. The next prime is 143113123247. The reversal of 143113123231 is 132321311341.

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 143113123231 - 219 = 143112598943 is a prime.

It is a super-2 number, since 2×1431131232312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143113123196 and 143113123205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143113123201) 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, 56744625 + ... + 56747146.

It is an arithmetic number, because the mean of its divisors is an integer number (19463838898).

Almost surely, 2143113123231 is an apocalyptic number.

143113123231 is a deficient number, since it is larger than the sum of its proper divisors (12597587953).

143113123231 is a wasteful number, since it uses less digits than its factorization.

143113123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113491881.

The product of its digits is 1296, while the sum is 25.

Adding to 143113123231 its reverse (132321311341), we get a palindrome (275434434572).

The spelling of 143113123231 in words is "one hundred forty-three billion, one hundred thirteen million, one hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 13 97 1261 113491771 1475393023 11008701787 143113123231