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106903831 = 293686339
BaseRepresentation
bin1100101111100…
…11100100010111
321110011021111011
412113303210113
5204331410311
614335153051
72435444656
oct627634427
9243137434
10106903831
1155387481
122b975787
13191c0008
14102ab19d
1595ba321
hex65f3917

106903831 has 4 divisors (see below), whose sum is σ = 110590200. Its totient is φ = 103217464.

The previous prime is 106903829. The next prime is 106903859. The reversal of 106903831 is 138309601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138309601 = 1049131849.

It is a cyclic number.

It is not a de Polignac number, because 106903831 - 21 = 106903829 is a prime.

It is a super-2 number, since 2×1069038312 = 22856858164953122, 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 = 106903793 and 106903802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106903801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843141 + ... + 1843198.

It is an arithmetic number, because the mean of its divisors is an integer number (27647550).

Almost surely, 2106903831 is an apocalyptic number.

106903831 is a deficient number, since it is larger than the sum of its proper divisors (3686369).

106903831 is an equidigital number, since it uses as much as digits as its factorization.

106903831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686368.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 106903831 is about 10339.4308837576. The cubic root of 106903831 is about 474.6036671818.

The spelling of 106903831 in words is "one hundred six million, nine hundred three thousand, eight hundred thirty-one".

Divisors: 1 29 3686339 106903831