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103020031265 = 531273293701
BaseRepresentation
bin101111111110001111…
…0001110110100100001
3100211220122100211022112
41133330132032310201
53141441112000030
6115154324445105
710304634550244
oct1377436166441
9324818324275
10103020031265
113a766138308
1217b71249795
13993a3b86a8
144db419d25b
152a2e438a95
hex17fc78ed21

103020031265 has 24 divisors (see below), whose sum is σ = 129490862184. Its totient is φ = 78664608000.

The previous prime is 103020031243. The next prime is 103020031333. The reversal of 103020031265 is 562130020301.

It can be written as a sum of positive squares in 4 ways, for example, as 691058944 + 102328972321 = 26288^2 + 319889^2 .

It is not a de Polignac number, because 103020031265 - 216 = 103019965729 is a prime.

It is a super-2 number, since 2×1030200312652 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 103020031265.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203915 + ... + 497615.

It is an arithmetic number, because the mean of its divisors is an integer number (5395452591).

Almost surely, 2103020031265 is an apocalyptic number.

It is an amenable number.

103020031265 is a deficient number, since it is larger than the sum of its proper divisors (26470830919).

103020031265 is an equidigital number, since it uses as much as digits as its factorization.

103020031265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293841 (or 293810 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 103020031265 its reverse (562130020301), we get a palindrome (665150051566).

The spelling of 103020031265 in words is "one hundred three billion, twenty million, thirty-one thousand, two hundred sixty-five".

Divisors: 1 5 31 73 155 365 961 2263 4805 11315 70153 293701 350765 1468505 9104731 21440173 45523655 107200865 282246661 664645363 1411233305 3323226815 20604006253 103020031265