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13222213031 = 193122448579
BaseRepresentation
bin11000101000001101…
…01111010110100111
31021010110221000102202
430110012233112213
5204034341304111
610024005525115
7645441646016
oct142406572647
937113830382
1013222213031
11567565a395
12269011379b
1313294357c1
148d6090a7d
15525be7b3b
hex3141af5a7

13222213031 has 8 divisors (see below), whose sum is σ = 14367091200. Its totient is φ = 12122232120.

The previous prime is 13222213009. The next prime is 13222213057. The reversal of 13222213031 is 13031222231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13222213031 - 210 = 13222212007 is a prime.

It is a super-2 number, since 2×132222130312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13222212994 and 13222213012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222213831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11223701 + ... + 11224878.

It is an arithmetic number, because the mean of its divisors is an integer number (1795886400).

Almost surely, 213222213031 is an apocalyptic number.

13222213031 is a deficient number, since it is larger than the sum of its proper divisors (1144878169).

13222213031 is a wasteful number, since it uses less digits than its factorization.

13222213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22448629.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13222213031 its reverse (13031222231), we get a palindrome (26253435262).

The spelling of 13222213031 in words is "thirteen billion, two hundred twenty-two million, two hundred thirteen thousand, thirty-one".

Divisors: 1 19 31 589 22448579 426523001 695905949 13222213031