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102454131 = 3135235023
BaseRepresentation
bin1100001101101…
…01001101110011
321010210012122110
412012311031303
5202212013011
614055540403
72352563043
oct606651563
9233705573
10102454131
115291833a
122a38a703
13182c2860
14d86d723
158edbba6
hex61b5373

102454131 has 16 divisors (see below), whose sum is σ = 147424256. Its totient is φ = 62915616.

The previous prime is 102454127. The next prime is 102454153. The reversal of 102454131 is 131454201.

It is not a de Polignac number, because 102454131 - 22 = 102454127 is a prime.

It is a super-2 number, since 2×1024541312 = 20993697917930322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102454098 and 102454107.

It is not an unprimeable number, because it can be changed into a prime (102454111) 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, 17886 + ... + 22908.

It is an arithmetic number, because the mean of its divisors is an integer number (9214016).

Almost surely, 2102454131 is an apocalyptic number.

102454131 is a deficient number, since it is larger than the sum of its proper divisors (44970125).

102454131 is a wasteful number, since it uses less digits than its factorization.

102454131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5562.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 102454131 is about 10121.9628037254. The cubic root of 102454131 is about 467.9252610944.

It can be divided in two parts, 1024 and 54131, that added together give a palindrome (55155).

The spelling of 102454131 in words is "one hundred two million, four hundred fifty-four thousand, one hundred thirty-one".

Divisors: 1 3 13 39 523 1569 5023 6799 15069 20397 65299 195897 2627029 7881087 34151377 102454131