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13122332231 = 431647718521
BaseRepresentation
bin11000011100010011…
…01110011001000111
31020212111222112201212
430032021232121013
5203333304112411
610010041042035
7643116661241
oct141611563107
936774875655
1013122332231
11562423a478
12266278631b
131311834338
148c6ad1091
1551c06868b
hex30e26e647

13122332231 has 8 divisors (see below), whose sum is σ = 13429042704. Its totient is φ = 12815691840.

The previous prime is 13122332219. The next prime is 13122332291. The reversal of 13122332231 is 13223322131.

13122332231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13122332231 is a prime.

It is a super-2 number, since 2×131223322312 (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 = 13122332197 and 13122332206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122332291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699251 + ... + 717771.

It is an arithmetic number, because the mean of its divisors is an integer number (1678630338).

Almost surely, 213122332231 is an apocalyptic number.

13122332231 is a deficient number, since it is larger than the sum of its proper divisors (306710473).

13122332231 is a wasteful number, since it uses less digits than its factorization.

13122332231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35041.

The product of its digits is 1296, while the sum is 23.

Adding to 13122332231 its reverse (13223322131), we get a palindrome (26345654362).

The spelling of 13122332231 in words is "thirteen billion, one hundred twenty-two million, three hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 43 16477 18521 708511 796403 305170517 13122332231