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103201231231 = 7191574942351
BaseRepresentation
bin110000000011101000…
…1011101000101111111
3100212101021022201221101
41200013101131011333
53142324003344411
6115224320313531
710312264664110
oct1400721350577
9325337281841
10103201231231
113a84944a54a
1218001a728a7
139968abc7c7
144dd028a207
152a402cc8c1
hex180745d17f

103201231231 has 16 divisors (see below), whose sum is σ = 124942658560. Its totient is φ = 83268712800.

The previous prime is 103201231223. The next prime is 103201231253. The reversal of 103201231231 is 132132102301.

It is not a de Polignac number, because 103201231231 - 23 = 103201231223 is a prime.

It is a super-2 number, since 2×1032012312312 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103201231199 and 103201231208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103201231261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2450295 + ... + 2492056.

It is an arithmetic number, because the mean of its divisors is an integer number (7808916160).

Almost surely, 2103201231231 is an apocalyptic number.

103201231231 is a deficient number, since it is larger than the sum of its proper divisors (21741427329).

103201231231 is a wasteful number, since it uses less digits than its factorization.

103201231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942534.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 103201231231 its reverse (132132102301), we get a palindrome (235333333532).

The spelling of 103201231231 in words is "one hundred three billion, two hundred one million, two hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 7 19 133 157 1099 2983 20881 4942351 34596457 93904669 657332683 775949107 5431643749 14743033033 103201231231