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102023131 = 7291493373
BaseRepresentation
bin1100001010010…
…11111111011011
321002222022102111
412011023333123
5202104220011
614042413151
72346116350
oct605137733
9232868374
10102023131
1152653541
122a2011b7
13181a1622
14d79a627
158e54121
hex614bfdb

102023131 has 16 divisors (see below), whose sum is σ = 121464000. Its totient is φ = 83841408.

The previous prime is 102023087. The next prime is 102023143. The reversal of 102023131 is 131320201.

It is not a de Polignac number, because 102023131 - 29 = 102022619 is a prime.

It is a super-2 number, since 2×1020231312 = 20817438518086322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102023731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28561 + ... + 31933.

It is an arithmetic number, because the mean of its divisors is an integer number (7591500).

Almost surely, 2102023131 is an apocalyptic number.

102023131 is a deficient number, since it is larger than the sum of its proper divisors (19440869).

102023131 is a wasteful number, since it uses less digits than its factorization.

102023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 102023131 is about 10100.6500285873. The cubic root of 102023131 is about 467.2681890013.

Adding to 102023131 its reverse (131320201), we get a palindrome (233343332).

The spelling of 102023131 in words is "one hundred two million, twenty-three thousand, one hundred thirty-one".

Divisors: 1 7 29 149 203 1043 3373 4321 23611 30247 97817 502577 684719 3518039 14574733 102023131