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13132012331231 = 191515171885169
BaseRepresentation
bin1011111100011000100011…
…1011100010000011011111
31201111102000111222210101122
42333012020323202003133
53210123330124044411
643532432503001155
72523520336036553
oct277061073420337
951442014883348
1013132012331231
114203289679092
1215810a44391bb
13743460733c91
14335842879863
1517b8d8ee69db
hexbf188ee20df

13132012331231 has 16 divisors (see below), whose sum is σ = 13917421689600. Its totient is φ = 12356060112000.

The previous prime is 13132012331161. The next prime is 13132012331281. The reversal of 13132012331231 is 13213321023131.

It is a cyclic number.

It is not a de Polignac number, because 13132012331231 - 230 = 13130938589407 is a prime.

It is a super-2 number, since 2×131320123312312 (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13132012331231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13132012331281) 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, 14393015 + ... + 15278183.

It is an arithmetic number, because the mean of its divisors is an integer number (869838855600).

Almost surely, 213132012331231 is an apocalyptic number.

13132012331231 is a deficient number, since it is larger than the sum of its proper divisors (785409358369).

13132012331231 is a wasteful number, since it uses less digits than its factorization.

13132012331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890510.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 13132012331231 its reverse (13213321023131), we get a palindrome (26345333354362).

The spelling of 13132012331231 in words is "thirteen trillion, one hundred thirty-two billion, twelve million, three hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 19 151 2869 5171 98249 780821 885169 14835599 16818211 133660519 2539549861 4577208899 86966969081 691158543749 13132012331231