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13131111030321 = 319230370368953
BaseRepresentation
bin1011111100010101001100…
…1101010101111000110001
31201111022200201000221222110
42333011103031111320301
53210120003410432241
643532203224555533
72523456113102244
oct277052315257061
951438621027873
1013131111030321
1142029669383a9
121580a92622ba9
13743348aa342b
14335798ca125b
1517b884d0e816
hexbf153355e31

13131111030321 has 8 divisors (see below), whose sum is σ = 18429629516320. Its totient is φ = 8293333282272.

The previous prime is 13131111030269. The next prime is 13131111030341. The reversal of 13131111030321 is 12303011113131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13131111030321 - 213 = 13131111022129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13131111030341) 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, 115185184420 + ... + 115185184533.

It is an arithmetic number, because the mean of its divisors is an integer number (2303703689540).

Almost surely, 213131111030321 is an apocalyptic number.

It is an amenable number.

13131111030321 is a deficient number, since it is larger than the sum of its proper divisors (5298518485999).

13131111030321 is a wasteful number, since it uses less digits than its factorization.

13131111030321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230370368975.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 13131111030321 its reverse (12303011113131), we get a palindrome (25434122143452).

It can be divided in two parts, 1313111 and 1030321, that added together give a palindrome (2343432).

The spelling of 13131111030321 in words is "thirteen trillion, one hundred thirty-one billion, one hundred eleven million, thirty thousand, three hundred twenty-one".

Divisors: 1 3 19 57 230370368953 691111106859 4377037010107 13131111030321