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63131013683 = 239812632543
BaseRepresentation
bin111010110010111001…
…101101001000110011
320000221201010210001222
4322302321231020303
52013243014414213
645000232415255
74363305522323
oct726271551063
9200851123058
1063131013683
11248568a1a81
121029a54752b
135c513236ca
1430ac641283
151997575808
hexeb2e6d233

63131013683 has 4 divisors (see below), whose sum is σ = 63133670208. Its totient is φ = 63128357160.

The previous prime is 63131013677. The next prime is 63131013763. The reversal of 63131013683 is 38631013136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63131013683 - 28 = 63131013427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63131013623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292291 + ... + 1340252.

It is an arithmetic number, because the mean of its divisors is an integer number (15783417552).

Almost surely, 263131013683 is an apocalyptic number.

63131013683 is a deficient number, since it is larger than the sum of its proper divisors (2656525).

63131013683 is a wasteful number, since it uses less digits than its factorization.

63131013683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656524.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 63131013683 in words is "sixty-three billion, one hundred thirty-one million, thirteen thousand, six hundred eighty-three".

Divisors: 1 23981 2632543 63131013683