Search a number
-
+
301213031 = 7283383397
BaseRepresentation
bin10001111101000…
…010010101100111
3202222210012121012
4101331002111213
51104102304111
645520012435
710315161050
oct2175022547
9688705535
10301213031
11145032899
1284a6111b
134a533c82
142c00b727
151b69d48b
hex11f42567

301213031 has 16 divisors (see below), whose sum is σ = 347234304. Its totient is φ = 255952224.

The previous prime is 301213009. The next prime is 301213051. The reversal of 301213031 is 130312103.

It is a cyclic number.

It is not a de Polignac number, because 301213031 - 210 = 301212007 is a prime.

It is a super-3 number, since 3×3012130313 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 301212997 and 301213015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (301213051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758525 + ... + 758921.

It is an arithmetic number, because the mean of its divisors is an integer number (21702144).

Almost surely, 2301213031 is an apocalyptic number.

301213031 is a deficient number, since it is larger than the sum of its proper divisors (46021273).

301213031 is a wasteful number, since it uses less digits than its factorization.

301213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 301213031 is about 17355.4899383452. The cubic root of 301213031 is about 670.3340066283.

Adding to 301213031 its reverse (130312103), we get a palindrome (431525134).

The spelling of 301213031 in words is "three hundred one million, two hundred thirteen thousand, thirty-one".

Divisors: 1 7 283 383 397 1981 2681 2779 108389 112351 152051 758723 786457 1064357 43030433 301213031