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102301931 = 112391097
BaseRepresentation
bin1100001100100…
…00000011101011
321010111110212102
412012100003223
5202142130211
614052404015
72351360234
oct606200353
9233443772
10102301931
1152823a56
122a31660b
131826b4b4
14d83008b
158eaba3b
hex61900eb

102301931 has 4 divisors (see below), whose sum is σ = 102394152. Its totient is φ = 102209712.

The previous prime is 102301877. The next prime is 102301933. The reversal of 102301931 is 139103201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102301931 - 26 = 102301867 is a prime.

It is a super-2 number, since 2×1023019312 = 20931370172657522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102301933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44426 + ... + 46671.

It is an arithmetic number, because the mean of its divisors is an integer number (25598538).

Almost surely, 2102301931 is an apocalyptic number.

102301931 is a deficient number, since it is larger than the sum of its proper divisors (92221).

102301931 is an equidigital number, since it uses as much as digits as its factorization.

102301931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92220.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 102301931 is about 10114.4417048100. The cubic root of 102301931 is about 467.6934385897.

The spelling of 102301931 in words is "one hundred two million, three hundred one thousand, nine hundred thirty-one".

Divisors: 1 1123 91097 102301931