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49102031 = 1136712163
BaseRepresentation
bin1011101101001…
…1110011001111
310102101122022202
42323103303033
5100032231111
64512232115
71134234416
oct273236317
9112348282
1049102031
11257980a0
121453b63b
13a232774
14674247d
15449db3b
hex2ed3ccf

49102031 has 8 divisors (see below), whose sum is σ = 53716224. Its totient is φ = 44512920.

The previous prime is 49102007. The next prime is 49102043. The reversal of 49102031 is 13020194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49102031 - 210 = 49101007 is a prime.

It is a super-2 number, since 2×491020312 = 4822018896649922, 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 = 49101994 and 49102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49102231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2045 + ... + 10118.

It is an arithmetic number, because the mean of its divisors is an integer number (6714528).

Almost surely, 249102031 is an apocalyptic number.

49102031 is a deficient number, since it is larger than the sum of its proper divisors (4614193).

49102031 is a wasteful number, since it uses less digits than its factorization.

49102031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12541.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 49102031 is about 7007.2841386660. The cubic root of 49102031 is about 366.1843830932.

The spelling of 49102031 in words is "forty-nine million, one hundred two thousand, thirty-one".

Divisors: 1 11 367 4037 12163 133793 4463821 49102031