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103240231 = 683151157
BaseRepresentation
bin1100010011101…
…01001000100111
321012021010222021
412021311020213
5202412141411
614124444011
72362345633
oct611651047
9235233867
10103240231
1153304a06
122a6a9607
13185095c3
14d9d5dc3
1590e4a71
hex6275227

103240231 has 4 divisors (see below), whose sum is σ = 103392072. Its totient is φ = 103088392.

The previous prime is 103240229. The next prime is 103240259. The reversal of 103240231 is 132042301.

Adding to 103240231 its reverse (132042301), we get a palindrome (235282532).

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132042301 = 193684157.

It is a cyclic number.

It is not a de Polignac number, because 103240231 - 21 = 103240229 is a prime.

It is a super-2 number, since 2×1032402312 = 21317090593866722, 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 (103240271) 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 3 ways as a sum of consecutive naturals, for example, 74896 + ... + 76261.

It is an arithmetic number, because the mean of its divisors is an integer number (25848018).

Almost surely, 2103240231 is an apocalyptic number.

103240231 is a deficient number, since it is larger than the sum of its proper divisors (151841).

103240231 is an equidigital number, since it uses as much as digits as its factorization.

103240231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151840.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 103240231 is about 10160.7200040155. The cubic root of 103240231 is about 469.1189636435.

The spelling of 103240231 in words is "one hundred three million, two hundred forty thousand, two hundred thirty-one".

Divisors: 1 683 151157 103240231