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1223311231313 = 31103383122841
BaseRepresentation
bin10001110011010011000…
…010000000100101010001
311022221120122220100122222
4101303103002000211101
5130020320133400223
62333551553110425
7154244535620363
oct21632302004521
94287518810588
101223311231313
11431892331216
12179104558415
138b485ca7ac2
14432cc4b0d33
1521c4b4c70c8
hex11cd3080951

1223311231313 has 8 divisors (see below), whose sum is σ = 1275032818176. Its totient is φ = 1172355890400.

The previous prime is 1223311231267. The next prime is 1223311231327. The reversal of 1223311231313 is 3131321133221.

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 1223311231313 - 26 = 1223311231249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223311231613) 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, 191558228 + ... + 191564613.

It is an arithmetic number, because the mean of its divisors is an integer number (159379102272).

Almost surely, 21223311231313 is an apocalyptic number.

It is an amenable number.

1223311231313 is a deficient number, since it is larger than the sum of its proper divisors (51721586863).

1223311231313 is a wasteful number, since it uses less digits than its factorization.

1223311231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383122975.

The product of its digits is 1944, while the sum is 26.

Adding to 1223311231313 its reverse (3131321133221), we get a palindrome (4354632364534).

The spelling of 1223311231313 in words is "one trillion, two hundred twenty-three billion, three hundred eleven million, two hundred thirty-one thousand, three hundred thirteen".

Divisors: 1 31 103 3193 383122841 11876808071 39461652623 1223311231313