Search a number
-
+
3103018031 = 26953115127
BaseRepresentation
bin1011100011110100…
…0100110000101111
322000020212122111202
42320331010300233
522323333034111
61231524240115
7136616134541
oct27075046057
98006778452
103103018031
111352633413
1272724003b
133a5b43959
14216181691
15132642b3b
hexb8f44c2f

3103018031 has 4 divisors (see below), whose sum is σ = 3103160112. Its totient is φ = 3102875952.

The previous prime is 3103018001. The next prime is 3103018033. The reversal of 3103018031 is 1308103013.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3103018031 - 210 = 3103017007 is a prime.

It is a super-2 number, since 2×31030180312 = 19257441801422233922, 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 = 3103017994 and 3103018012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3103018033) 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 3 ways as a sum of consecutive naturals, for example, 30611 + ... + 84516.

It is an arithmetic number, because the mean of its divisors is an integer number (775790028).

Almost surely, 23103018031 is an apocalyptic number.

3103018031 is a deficient number, since it is larger than the sum of its proper divisors (142081).

3103018031 is a wasteful number, since it uses less digits than its factorization.

3103018031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142080.

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

The square root of 3103018031 is about 55704.7397534537. The cubic root of 3103018031 is about 1458.5727640954.

The spelling of 3103018031 in words is "three billion, one hundred three million, eighteen thousand, thirty-one".

Divisors: 1 26953 115127 3103018031