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2303402143 = 7256898263
BaseRepresentation
bin1000100101001011…
…0010000010011111
312221112020221201111
42021102302002133
514204132332033
61020321522451
7111036411100
oct21122620237
95845227644
102303402143
11a82235139
125434a3427
132a9296863
1417bcb63a7
15d73447cd
hex894b209f

2303402143 has 12 divisors (see below), whose sum is σ = 2680263120. Its totient is φ = 1973758752.

The previous prime is 2303402117. The next prime is 2303402149. The reversal of 2303402143 is 3412043032.

It is a happy number.

It is not a de Polignac number, because 2303402143 - 213 = 2303393951 is a prime.

It is a super-2 number, since 2×23034021432 = 10611322864753984898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2303402149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274630 + ... + 282892.

It is an arithmetic number, because the mean of its divisors is an integer number (223355260).

Almost surely, 22303402143 is an apocalyptic number.

2303402143 is a deficient number, since it is larger than the sum of its proper divisors (376860977).

2303402143 is an equidigital number, since it uses as much as digits as its factorization.

2303402143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13966 (or 13959 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 2303402143 is about 47993.7719188646. The cubic root of 2303402143 is about 1320.6566489159.

Adding to 2303402143 its reverse (3412043032), we get a palindrome (5715445175).

The spelling of 2303402143 in words is "two billion, three hundred three million, four hundred two thousand, one hundred forty-three".

Divisors: 1 7 49 5689 8263 39823 57841 278761 404887 47008207 329057449 2303402143