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130143234431 = 7232943376427
BaseRepresentation
bin111100100110100100…
…1000010100101111111
3110102220220110022022202
41321031021002211333
54113013132000211
6135441553102115
712255033145310
oct1711511024577
9412826408282
10130143234431
11502145102a1
122128085793b
13c370775132
146428512607
1535ba70853b
hex1e4d24297f

130143234431 has 32 divisors (see below), whose sum is σ = 160615664640. Its totient is φ = 102982150656.

The previous prime is 130143234391. The next prime is 130143234433. The reversal of 130143234431 is 134432341031.

It is a happy number.

It is not a de Polignac number, because 130143234431 - 214 = 130143218047 is a prime.

It is a super-2 number, since 2×1301432344312 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130143234394 and 130143234403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130143234433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20246240 + ... + 20252666.

It is an arithmetic number, because the mean of its divisors is an integer number (5019239520).

Almost surely, 2130143234431 is an apocalyptic number.

130143234431 is a deficient number, since it is larger than the sum of its proper divisors (30472430209).

130143234431 is a wasteful number, since it uses less digits than its factorization.

130143234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10823.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 130143234431 its reverse (134432341031), we get a palindrome (264575575462).

The spelling of 130143234431 in words is "one hundred thirty billion, one hundred forty-three million, two hundred thirty-four thousand, four hundred thirty-one".

Divisors: 1 7 23 29 161 203 667 4337 4669 6427 30359 44989 99751 125773 147821 186383 698257 880411 1034747 1304681 2892779 4286809 20249453 27873899 30007663 195117293 641099677 808343071 4487697739 5658401497 18591890633 130143234431