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13131068983 = 106912283507
BaseRepresentation
bin11000011101010110…
…00011011000110111
31020220010102102022021
430032223003120313
5203343023201413
610010552214011
7643254146644
oct141653033067
936803372267
1013131068983
11562916752a
12266569a307
1313135a2c06
148c7d26dcb
1551cbe218d
hex30eac3637

13131068983 has 4 divisors (see below), whose sum is σ = 13143353560. Its totient is φ = 13118784408.

The previous prime is 13131068941. The next prime is 13131069089. The reversal of 13131068983 is 38986013131.

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 13131068983 - 213 = 13131060791 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 (13131062983) 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, 6140685 + ... + 6142822.

It is an arithmetic number, because the mean of its divisors is an integer number (3285838390).

Almost surely, 213131068983 is an apocalyptic number.

13131068983 is a deficient number, since it is larger than the sum of its proper divisors (12284577).

13131068983 is a wasteful number, since it uses less digits than its factorization.

13131068983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12284576.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 13131068983 in words is "thirteen billion, one hundred thirty-one million, sixty-eight thousand, nine hundred eighty-three".

Divisors: 1 1069 12283507 13131068983