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2231002123 = 717103318149
BaseRepresentation
bin1000010011111010…
…0110010000001011
312202111000122120021
42010332212100023
514032114031443
61005214041311
7106200130240
oct20476462013
95674018507
102231002123
11a45384a09
125231a9237
132972977cc
1417242b5c7
15d0ce29ed
hex84fa640b

2231002123 has 16 divisors (see below), whose sum is σ = 2702462400. Its totient is φ = 1797958656.

The previous prime is 2231002117. The next prime is 2231002127. The reversal of 2231002123 is 3212001322.

It is a cyclic number.

It is not a de Polignac number, because 2231002123 - 217 = 2230871051 is a prime.

It is a super-3 number, since 3×22310021233 (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231002097 and 2231002106.

It is not an unprimeable number, because it can be changed into a prime (2231002127) 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, 113853 + ... + 132001.

It is an arithmetic number, because the mean of its divisors is an integer number (168903900).

Almost surely, 22231002123 is an apocalyptic number.

2231002123 is a deficient number, since it is larger than the sum of its proper divisors (471460277).

2231002123 is a wasteful number, since it uses less digits than its factorization.

2231002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19206.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2231002123 is about 47233.4851879469. The cubic root of 2231002123 is about 1306.6722294366.

Adding to 2231002123 its reverse (3212001322), we get a palindrome (5443003445).

The spelling of 2231002123 in words is "two billion, two hundred thirty-one million, two thousand, one hundred twenty-three".

Divisors: 1 7 17 119 1033 7231 17561 18149 122927 127043 308533 2159731 18747917 131235419 318714589 2231002123