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103040031 = 354762791
BaseRepresentation
bin1100010010001…
…00010000011111
321011212222100110
412021010100133
5202334240111
614120301103
72360553153
oct611042037
9234788313
10103040031
1153188556
122a611793
1318469443
14d983063
1590a55a6
hex624441f

103040031 has 8 divisors (see below), whose sum is σ = 137640064. Its totient is φ = 68566680.

The previous prime is 103039999. The next prime is 103040033. The reversal of 103040031 is 130040301.

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

It is not a de Polignac number, because 103040031 - 25 = 103039999 is a prime.

It is a super-2 number, since 2×1030400312 = 21234495976961922, 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 = 103039989 and 103040016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103040033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29755 + ... + 33036.

It is an arithmetic number, because the mean of its divisors is an integer number (17205008).

Almost surely, 2103040031 is an apocalyptic number.

103040031 is a deficient number, since it is larger than the sum of its proper divisors (34600033).

103040031 is an equidigital number, since it uses as much as digits as its factorization.

103040031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63341.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 103040031 is about 10150.8635593234. The cubic root of 103040031 is about 468.8155341619.

Adding to 103040031 its reverse (130040301), we get a palindrome (233080332).

The spelling of 103040031 in words is "one hundred three million, forty thousand, thirty-one".

Divisors: 1 3 547 1641 62791 188373 34346677 103040031