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102201022031 = 232769251231
BaseRepresentation
bin101111100101110100…
…1111101011001001111
3100202210120020211212012
41133023221331121033
53133301430201111
6114541150331435
710245431232233
oct1371351753117
9322716224765
10102201022031
113a3858a3579
1217982ab9b7b
13983980b344
144d374c65c3
1529d25a948b
hex17cba7d64f

102201022031 has 12 divisors (see below), whose sum is σ = 106977097920. Its totient is φ = 97629987840.

The previous prime is 102201022009. The next prime is 102201022087. The reversal of 102201022031 is 130220102201.

It is a happy number.

It is not a de Polignac number, because 102201022031 - 210 = 102201021007 is a prime.

It is a super-2 number, since 2×1022010220312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102201021997 and 102201022015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201022631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281186 + ... + 532416.

It is an arithmetic number, because the mean of its divisors is an integer number (8914758160).

Almost surely, 2102201022031 is an apocalyptic number.

102201022031 is a deficient number, since it is larger than the sum of its proper divisors (4776075889).

102201022031 is an equidigital number, since it uses as much as digits as its factorization.

102201022031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252046 (or 252023 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102201022031 its reverse (130220102201), we get a palindrome (232421124232).

The spelling of 102201022031 in words is "one hundred two billion, two hundred one million, twenty-two thousand, thirty-one".

Divisors: 1 23 529 769 17687 251231 406801 5778313 132901199 193196639 4443522697 102201022031