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102703031 = 312106871
BaseRepresentation
bin1100001111100…
…01111110110111
321011020212001222
412013301332313
5202242444111
614105140555
72354650514
oct607617667
9234225058
10102703031
1152a78342
122a48a75b
131837bc32
14d8d630b
15903a7db
hex61f1fb7

102703031 has 6 divisors (see below), whose sum is σ = 106123896. Its totient is φ = 99389100.

The previous prime is 102702997. The next prime is 102703033. The reversal of 102703031 is 130307201.

It is a de Polignac number, because none of the positive numbers 2k-102703031 is a prime.

It is a super-2 number, since 2×1027030312 = 21095825153173922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102703033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52475 + ... + 54396.

It is an arithmetic number, because the mean of its divisors is an integer number (17687316).

Almost surely, 2102703031 is an apocalyptic number.

102703031 is a deficient number, since it is larger than the sum of its proper divisors (3420865).

102703031 is an equidigital number, since it uses as much as digits as its factorization.

102703031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106933 (or 106902 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 102703031 is about 10134.2503916175. The cubic root of 102703031 is about 468.3038773902.

The spelling of 102703031 in words is "one hundred two million, seven hundred three thousand, thirty-one".

Divisors: 1 31 961 106871 3313001 102703031