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305064031 = 17157114299
BaseRepresentation
bin10010001011101…
…110100001011111
3210021000212011211
4102023232201133
51111044022111
650134325251
710363000336
oct2213564137
9707025154
10305064031
11147223138
12861b9827
134b281a7c
142c730d1d
151bbae521
hex122ee85f

305064031 has 8 divisors (see below), whose sum is σ = 325069200. Its totient is φ = 285287808.

The previous prime is 305064013. The next prime is 305064047. The reversal of 305064031 is 130460503.

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 305064031 - 29 = 305063519 is a prime.

It is a super-2 number, since 2×3050640312 = 186128126019937922, 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 = 305063993 and 305064011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305062031) 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, 54481 + ... + 59818.

It is an arithmetic number, because the mean of its divisors is an integer number (40633650).

Almost surely, 2305064031 is an apocalyptic number.

305064031 is a deficient number, since it is larger than the sum of its proper divisors (20005169).

305064031 is a wasteful number, since it uses less digits than its factorization.

305064031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114473.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 305064031 is about 17466.0823025657. The cubic root of 305064031 is about 673.1786516614.

It can be divided in two parts, 3050 and 64031, that added together give a square (67081 = 2592).

The spelling of 305064031 in words is "three hundred five million, sixty-four thousand, thirty-one".

Divisors: 1 17 157 2669 114299 1943083 17944943 305064031