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1213230332013 = 37318087230449
BaseRepresentation
bin10001101001111010001…
…010011011100001101101
311021222120002220121120020
4101221322022123201231
5124334143431111023
62325203400312353
7153436656445410
oct21517212334155
94258502817506
101213230332013
11428589991387
121771704726b9
138a53a603b2b
1442a136cdb77
152185b488de3
hex11a7a29b86d

1213230332013 has 32 divisors (see below), whose sum is σ = 1908612710400. Its totient is φ = 670824910080.

The previous prime is 1213230332009. The next prime is 1213230332021. The reversal of 1213230332013 is 3102330323121.

It is not a de Polignac number, because 1213230332013 - 22 = 1213230332009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213230322013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5149413 + ... + 5379861.

It is an arithmetic number, because the mean of its divisors is an integer number (59644147200).

Almost surely, 21213230332013 is an apocalyptic number.

It is an amenable number.

1213230332013 is a deficient number, since it is larger than the sum of its proper divisors (695382378387).

1213230332013 is a wasteful number, since it uses less digits than its factorization.

1213230332013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238577.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1213230332013 its reverse (3102330323121), we get a palindrome (4315560655134).

The spelling of 1213230332013 in words is "one trillion, two hundred thirteen billion, two hundred thirty million, three hundred thirty-two thousand, thirteen".

Divisors: 1 3 7 21 31 93 217 651 8087 24261 56609 169827 230449 250697 691347 752091 1613143 1754879 4839429 5264637 7143919 21431757 50007433 150022299 1863641063 5590923189 13045487441 39136462323 57772872953 173318618859 404410110671 1213230332013