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30312014 = 215156007
BaseRepresentation
bin111001110100…
…0011001001110
32010001000021012
41303220121032
530224441024
63001405222
7515435135
oct163503116
963030235
1030312014
1116123957
12a199812
136384005
14405091c
1529db50e
hex1ce864e

30312014 has 4 divisors (see below), whose sum is σ = 45468024. Its totient is φ = 15156006.

The previous prime is 30312013. The next prime is 30312053. The reversal of 30312014 is 41021303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41021303 = 79519257.

It is a self number, because there is not a number n which added to its sum of digits gives 30312014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312013) 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 as a sum of consecutive naturals, namely, 7578002 + ... + 7578005.

It is an arithmetic number, because the mean of its divisors is an integer number (11367006).

Almost surely, 230312014 is an apocalyptic number.

30312014 is a deficient number, since it is larger than the sum of its proper divisors (15156010).

30312014 is a wasteful number, since it uses less digits than its factorization.

30312014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15156009.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30312014 is about 5505.6347499630. The cubic root of 30312014 is about 311.7967597572.

Adding to 30312014 its reverse (41021303), we get a palindrome (71333317).

The spelling of 30312014 in words is "thirty million, three hundred twelve thousand, fourteen".

Divisors: 1 2 15156007 30312014