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13131000313111 = 16262980742059
BaseRepresentation
bin1011111100010100110010…
…0110111111010100010111
31201111022101222200221112001
42333011030212333110113
53210114242040004421
643532144231540131
72523453300032452
oct277051446772427
951438358627461
1013131000313111
11420290a39697a
121580a6152a647
1374332bb797a5
143357882c0499
1517b87a23e691
hexbf14c9bf517

13131000313111 has 4 divisors (see below), whose sum is σ = 13131081217800. Its totient is φ = 13130919408424.

The previous prime is 13131000313087. The next prime is 13131000313121. The reversal of 13131000313111 is 11131300013131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13131000313111 - 229 = 13130463442199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131000313121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40208401 + ... + 40533658.

It is an arithmetic number, because the mean of its divisors is an integer number (3282770304450).

Almost surely, 213131000313111 is an apocalyptic number.

13131000313111 is a deficient number, since it is larger than the sum of its proper divisors (80904689).

13131000313111 is an equidigital number, since it uses as much as digits as its factorization.

13131000313111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80904688.

The product of its (nonzero) digits is 81, while the sum is 19.

Adding to 13131000313111 its reverse (11131300013131), we get a palindrome (24262300326242).

The spelling of 13131000313111 in words is "thirteen trillion, one hundred thirty-one billion, three hundred thirteen thousand, one hundred eleven".

Divisors: 1 162629 80742059 13131000313111