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13131231200104 = 2317453172130617
BaseRepresentation
bin1011111100010101101001…
…0111110000001101101000
31201111100000002011012221011
42333011122113300031220
53210120230141400404
643532223200353304
72523462102401413
oct277053227601550
951440002135834
1013131231200104
114202a18755776
121580b06915834
13743367959704
143357aac22b7a
1517b89064a604
hexbf15a5f0368

13131231200104 has 32 divisors (see below), whose sum is σ = 26069943561480. Its totient is φ = 6179263657984.

The previous prime is 13131231200089. The next prime is 13131231200107. The reversal of 13131231200104 is 40100213213131.

It can be written as a sum of positive squares in 4 ways, for example, as 13094483076900 + 36748123204 = 3618630^2 + 191698^2 .

It is a super-2 number, since 2×131312312001042 (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13131231200107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5097804 + ... + 7228420.

Almost surely, 213131231200104 is an apocalyptic number.

It is an amenable number.

13131231200104 is a deficient number, since it is larger than the sum of its proper divisors (12938712361376).

13131231200104 is a wasteful number, since it uses less digits than its factorization.

13131231200104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175957 (or 2175953 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13131231200104 its reverse (40100213213131), we get a palindrome (53231444413235).

The spelling of 13131231200104 in words is "thirteen trillion, one hundred thirty-one billion, two hundred thirty-one million, two hundred thousand, one hundred four".

Divisors: 1 2 4 8 17 34 68 136 45317 90634 181268 362536 770389 1540778 2130617 3081556 4261234 6163112 8522468 17044936 36220489 72440978 144881956 289763912 96553170589 193106341178 386212682356 772425364712 1641403900013 3282807800026 6565615600052 13131231200104