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102203212131231 = 3197919188174839
BaseRepresentation
bin10111001111010000001010…
…001001110110101110011111
3111101212112100120122020102120
4113033100022021312232133
5101343444134301144411
61001211301340554023
730345636605231361
oct2717201211665637
9441775316566376
10102203212131231
112a6241588a7972
12b567800b52913
13450494c324943
141b3493a208d31
15bc3817c19106
hex5cf40a276b9f

102203212131231 has 16 divisors (see below), whose sum is σ = 137111715417600. Its totient is φ = 67715844503328.

The previous prime is 102203212131197. The next prime is 102203212131257. The reversal of 102203212131231 is 132131212302201.

It is not a de Polignac number, because 102203212131231 - 222 = 102203207936927 is a prime.

It is a super-2 number, since 2×1022032121312312 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102203212131931) 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, 93544291 + ... + 94630548.

It is an arithmetic number, because the mean of its divisors is an integer number (8569482213600).

Almost surely, 2102203212131231 is an apocalyptic number.

102203212131231 is a deficient number, since it is larger than the sum of its proper divisors (34908503286369).

102203212131231 is a wasteful number, since it uses less digits than its factorization.

102203212131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188175958.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 102203212131231 its reverse (132131212302201), we get a palindrome (234334424433432).

The spelling of 102203212131231 in words is "one hundred two trillion, two hundred three billion, two hundred twelve million, one hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 3 197 591 919 2757 181043 543129 188174839 564524517 37070443283 111211329849 172932677041 518798031123 34067737377077 102203212131231