Search a number
-
+
231311301 = 31319312161
BaseRepresentation
bin11011100100110…
…00011111000101
3121010020211110020
431302120133011
5433203430201
634541445353
75506053654
oct1562303705
9533224406
10231311301
11109629671
1265570859
1338bcb0c0
1422a1319b
1515491a36
hexdc987c5

231311301 has 16 divisors (see below), whose sum is σ = 349621440. Its totient is φ = 134853120.

The previous prime is 231311287. The next prime is 231311357. The reversal of 231311301 is 103113132.

It is not a de Polignac number, because 231311301 - 27 = 231311173 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231311371) 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, 155340 + ... + 156821.

It is an arithmetic number, because the mean of its divisors is an integer number (21851340).

Almost surely, 2231311301 is an apocalyptic number.

It is an amenable number.

231311301 is a deficient number, since it is larger than the sum of its proper divisors (118310139).

231311301 is a wasteful number, since it uses less digits than its factorization.

231311301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312196.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 231311301 is about 15208.9217566532. The cubic root of 231311301 is about 613.8547448236.

Adding to 231311301 its reverse (103113132), we get a palindrome (334424433).

The spelling of 231311301 in words is "two hundred thirty-one million, three hundred eleven thousand, three hundred one".

Divisors: 1 3 13 19 39 57 247 741 312161 936483 4058093 5931059 12174279 17793177 77103767 231311301