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1213405310404 = 22743335903943
BaseRepresentation
bin10001101010000100100…
…101111010110111000100
311022000000022011102210101
4101222010211322313010
5124340023224413104
62325233010533444
7153444212650450
oct21520445726704
94260008142711
101213405310404
11428669734221
121771bab97284
138a56793a141
1442a2ca3b660
152186b9ee5a4
hex11a8497adc4

1213405310404 has 12 divisors (see below), whose sum is σ = 2426810620864. Its totient is φ = 520030847304.

The previous prime is 1213405310333. The next prime is 1213405310417. The reversal of 1213405310404 is 4040135043121.

1213405310404 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 43335903943 = 1213405310404 / (1 + 2 + 1 + 3 + 4 + 0 + 5 + 3 + 1 + 0 + 4 + 0 + 4).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21667951944 + ... + 21667951999.

Almost surely, 21213405310404 is an apocalyptic number.

1213405310404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1213405310404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213405310404 is a wasteful number, since it uses less digits than its factorization.

1213405310404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43335903954 (or 43335903952 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 1213405310404 in words is "one trillion, two hundred thirteen billion, four hundred five million, three hundred ten thousand, four hundred four".

Divisors: 1 2 4 7 14 28 43335903943 86671807886 173343615772 303351327601 606702655202 1213405310404