Search a number
-
+
103103021 = 714729003
BaseRepresentation
bin1100010010100…
…11101000101101
321012000011202102
412021103220231
5202343244041
614121504445
72361234620
oct611235055
9235004672
10103103021
115322090a
122a642125
131848c008
14d99bdb7
1590b909b
hex6253a2d

103103021 has 4 divisors (see below), whose sum is σ = 117832032. Its totient is φ = 88374012.

The previous prime is 103103009. The next prime is 103103027. The reversal of 103103021 is 120301301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120301301 = 816114741.

It is a cyclic number.

It is not a de Polignac number, because 103103021 - 26 = 103102957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103102993 and 103103011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103103027) 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, 7364495 + ... + 7364508.

It is an arithmetic number, because the mean of its divisors is an integer number (29458008).

Almost surely, 2103103021 is an apocalyptic number.

It is an amenable number.

103103021 is a deficient number, since it is larger than the sum of its proper divisors (14729011).

103103021 is an equidigital number, since it uses as much as digits as its factorization.

103103021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14729010.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 103103021 is about 10153.9657769760. The cubic root of 103103021 is about 468.9110461512.

Adding to 103103021 its reverse (120301301), we get a palindrome (223404322).

It can be divided in two parts, 10310 and 3021, that added together give a palindrome (13331).

The spelling of 103103021 in words is "one hundred three million, one hundred three thousand, twenty-one".

Divisors: 1 7 14729003 103103021