Search a number
-
+
308106121 = 2930734607
BaseRepresentation
bin10010010111010…
…101001110001001
3210110202102010211
4102113111032021
51112333343441
650323441121
710430600401
oct2227251611
9713672124
10308106121
11148a10764
12872261a1
134baa861b
142ccc3801
151c0b0a81
hex125d5389

308106121 has 8 divisors (see below), whose sum is σ = 319777920. Its totient is φ = 296504208.

The previous prime is 308106041. The next prime is 308106131. The reversal of 308106121 is 121601803.

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

It is a cyclic number.

It is not a de Polignac number, because 308106121 - 213 = 308097929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 308106092 and 308106101.

It is not an unprimeable number, because it can be changed into a prime (308106131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8401 + ... + 26206.

It is an arithmetic number, because the mean of its divisors is an integer number (39972240).

Almost surely, 2308106121 is an apocalyptic number.

It is an amenable number.

308106121 is a deficient number, since it is larger than the sum of its proper divisors (11671799).

308106121 is a wasteful number, since it uses less digits than its factorization.

308106121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34943.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 308106121 is about 17552.9519169854. The cubic root of 308106121 is about 675.4088942754.

Adding to 308106121 its reverse (121601803), we get a palindrome (429707924).

The spelling of 308106121 in words is "three hundred eight million, one hundred six thousand, one hundred twenty-one".

Divisors: 1 29 307 8903 34607 1003603 10624349 308106121