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10103102031 = 3112191314549
BaseRepresentation
bin10010110100011000…
…10001101001001111
3222002002202202112010
421122030101221033
5131142343231111
64350304312303
7505235643651
oct113214215117
928062682463
1010103102031
114314a35100
121b5b612693
13c50178ba9
146bbb206d1
153e1e76aa6
hex25a311a4f

10103102031 has 24 divisors (see below), whose sum is σ = 14815508400. Its totient is φ = 6119470720.

The previous prime is 10103102021. The next prime is 10103102033. The reversal of 10103102031 is 13020130101.

It is not a de Polignac number, because 10103102031 - 210 = 10103101007 is a prime.

It is a super-2 number, since 2×101031020312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10103101998 and 10103102016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10103102033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 687145 + ... + 701693.

It is an arithmetic number, because the mean of its divisors is an integer number (617312850).

Almost surely, 210103102031 is an apocalyptic number.

10103102031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10103102031 is a deficient number, since it is larger than the sum of its proper divisors (4712406369).

10103102031 is a wasteful number, since it uses less digits than its factorization.

10103102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16487 (or 16476 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 10103102031 its reverse (13020130101), we get a palindrome (23123232132).

The spelling of 10103102031 in words is "ten billion, one hundred three million, one hundred two thousand, thirty-one".

Divisors: 1 3 11 33 121 363 1913 5739 14549 21043 43647 63129 160039 231473 480117 694419 1760429 5281287 27832237 83496711 306154607 918463821 3367700677 10103102031