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13970311 = 17839901
BaseRepresentation
bin110101010010…
…101110000111
3222021202122221
4311102232013
512034022221
61215233211
7226513525
oct65225607
928252587
1013970311
117982113
124818807
132b81a74
141bd9315
15135e541
hexd52b87

13970311 has 8 divisors (see below), whose sum is σ = 14971824. Its totient is φ = 12988800.

The previous prime is 13970309. The next prime is 13970347. The reversal of 13970311 is 11307931.

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 13970311 - 21 = 13970309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13970711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3540 + ... + 6361.

It is an arithmetic number, because the mean of its divisors is an integer number (1871478).

Almost surely, 213970311 is an apocalyptic number.

13970311 is a deficient number, since it is larger than the sum of its proper divisors (1001513).

13970311 is an equidigital number, since it uses as much as digits as its factorization.

13970311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001.

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 13970311 is about 3737.6879216970. The cubic root of 13970311 is about 240.8437374794.

The spelling of 13970311 in words is "thirteen million, nine hundred seventy thousand, three hundred eleven".

Divisors: 1 17 83 1411 9901 168317 821783 13970311