Search a number
-
+
10231212231 = 3210111255459
BaseRepresentation
bin10011000011101001…
…11110100011000111
3222102000211102200100
421201310332203013
5131423142242411
64411122215143
7511352604042
oct114164764307
928360742610
1010231212231
1143802861a9
121b964b44b3
13c70882446
146d0b4bc59
153ed330456
hex261d3e8c7

10231212231 has 12 divisors (see below), whose sum is σ = 14924739960. Its totient is φ = 6753274800.

The previous prime is 10231212203. The next prime is 10231212241. The reversal of 10231212231 is 13221213201.

It is not a de Polignac number, because 10231212231 - 214 = 10231195847 is a prime.

It is a super-2 number, since 2×102312122312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10231212241) 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, 5626821 + ... + 5628638.

It is an arithmetic number, because the mean of its divisors is an integer number (1243728330).

Almost surely, 210231212231 is an apocalyptic number.

10231212231 is a deficient number, since it is larger than the sum of its proper divisors (4693527729).

10231212231 is a wasteful number, since it uses less digits than its factorization.

10231212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11255566 (or 11255563 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 10231212231 its reverse (13221213201), we get a palindrome (23452425432).

The spelling of 10231212231 in words is "ten billion, two hundred thirty-one million, two hundred twelve thousand, two hundred thirty-one".

Divisors: 1 3 9 101 303 909 11255459 33766377 101299131 1136801359 3410404077 10231212231