Search a number
-
+
231001103031223 = 7219248121485533
BaseRepresentation
bin110100100001100000100010…
…101100000101101110110111
31010021220111020001022000220211
4310201200202230011232313
5220234210224333444343
62135144235225010251
766441164451252400
oct6441404254055667
91107814201260824
10231001103031223
1167671021524a48
1221aa968a023987
139bb8406369255
144108727b049a7
151ba8d0736379d
hexd21822b05bb7

231001103031223 has 12 divisors (see below), whose sum is σ = 282858493508760. Its totient is φ = 187579843062192.

The previous prime is 231001103031221. The next prime is 231001103031269. The reversal of 231001103031223 is 322130301100132.

It is not a de Polignac number, because 231001103031223 - 21 = 231001103031221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231001103031194 and 231001103031203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231001103031221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124060741836 + ... + 124060743697.

It is an arithmetic number, because the mean of its divisors is an integer number (23571541125730).

Almost surely, 2231001103031223 is an apocalyptic number.

231001103031223 is a deficient number, since it is larger than the sum of its proper divisors (51857390477537).

231001103031223 is a wasteful number, since it uses less digits than its factorization.

231001103031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248121485566 (or 248121485559 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231001103031223 its reverse (322130301100132), we get a palindrome (553131404131355).

The spelling of 231001103031223 in words is "two hundred thirty-one trillion, one billion, one hundred three million, thirty-one thousand, two hundred twenty-three".

Divisors: 1 7 19 49 133 931 248121485533 1736850398731 4714308225127 12157952791117 33000157575889 231001103031223