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13340230431 = 311439401149
BaseRepresentation
bin11000110110010001…
…11100001100011111
31021102200222220212120
430123020330030133
5204310044333211
610043423234023
7651404042043
oct143310741437
937380886776
1013340230431
115726237630
122703748913
131347a17198
14907a12023
1553125ad06
hex31b23c31f

13340230431 has 16 divisors (see below), whose sum is σ = 19855228800. Its totient is φ = 7896964320.

The previous prime is 13340230427. The next prime is 13340230471. The reversal of 13340230431 is 13403204331.

It is not a de Polignac number, because 13340230431 - 22 = 13340230427 is a prime.

It is a super-2 number, since 2×133402304312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13340230471) 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, 4699156 + ... + 4701993.

It is an arithmetic number, because the mean of its divisors is an integer number (1240951800).

Almost surely, 213340230431 is an apocalyptic number.

13340230431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13340230431 is a deficient number, since it is larger than the sum of its proper divisors (6514998369).

13340230431 is a wasteful number, since it uses less digits than its factorization.

13340230431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9401206.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 13340230431 its reverse (13403204331), we get a palindrome (26743434762).

The spelling of 13340230431 in words is "thirteen billion, three hundred forty million, two hundred thirty thousand, four hundred thirty-one".

Divisors: 1 3 11 33 43 129 473 1419 9401149 28203447 103412639 310237917 404249407 1212748221 4446743477 13340230431