Search a number
-
+
13031201223 = 322563956473
BaseRepresentation
bin11000010001011100…
…00101100111000111
31020122011111121111100
430020232011213013
5203141441414343
65553023511143
7640632245205
oct141056054707
936564447440
1013031201223
115587856397
1226381584b3
1312c89a7671
148b896c075
155140669d3
hex308b859c7

13031201223 has 12 divisors (see below), whose sum is σ = 18823913680. Its totient is φ = 8686974816.

The previous prime is 13031201179. The next prime is 13031201231. The reversal of 13031201223 is 32210213031.

13031201223 is a `hidden beast` number, since 130 + 312 + 0 + 1 + 223 = 666.

It is not a de Polignac number, because 13031201223 - 26 = 13031201159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13031201196 and 13031201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031201263) 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, 202515 + ... + 258987.

Almost surely, 213031201223 is an apocalyptic number.

13031201223 is a deficient number, since it is larger than the sum of its proper divisors (5792712457).

13031201223 is a wasteful number, since it uses less digits than its factorization.

13031201223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82118 (or 82115 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13031201223 its reverse (32210213031), we get a palindrome (45241414254).

The spelling of 13031201223 in words is "thirteen billion, thirty-one million, two hundred one thousand, two hundred twenty-three".

Divisors: 1 3 9 25639 56473 76917 169419 230751 508257 1447911247 4343733741 13031201223