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103130531 = 773201821
BaseRepresentation
bin1100010010110…
…10010110100011
321012001120111022
412021122112203
5202400134111
614122240055
72361411050
oct611322643
9235046438
10103130531
115323a549
122a65602b
131849b6aa
14d9a8027
1590c22db
hex625a5a3

103130531 has 8 divisors (see below), whose sum is σ = 119478624. Its totient is φ = 87186240.

The previous prime is 103130519. The next prime is 103130543. The reversal of 103130531 is 135031301.

It is an interprime number because it is at equal distance from previous prime (103130519) and next prime (103130543).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-103130531 is a prime.

It is a super-2 number, since 2×1031305312 = 21271812848683922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103130591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100400 + ... + 101421.

It is an arithmetic number, because the mean of its divisors is an integer number (14934828).

Almost surely, 2103130531 is an apocalyptic number.

103130531 is a deficient number, since it is larger than the sum of its proper divisors (16348093).

103130531 is an equidigital number, since it uses as much as digits as its factorization.

103130531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201901.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 103130531 is about 10155.3203297582. The cubic root of 103130531 is about 468.9527474697.

Adding to 103130531 its reverse (135031301), we get a palindrome (238161832).

The spelling of 103130531 in words is "one hundred three million, one hundred thirty thousand, five hundred thirty-one".

Divisors: 1 7 73 511 201821 1412747 14732933 103130531