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13030031231983 = 15077986418077
BaseRepresentation
bin1011110110011100101001…
…1000100000101111101111
31201010122210021120011212201
42331213022120200233233
53201441000443410413
643413525210042331
72513250215016523
oct275471230405757
951118707504781
1013030031231983
114174006a35887
1215653831193a7
1373695a66717c
1433092a67dd83
15178e1adce9dd
hexbd9ca620bef

13030031231983 has 4 divisors (see below), whose sum is σ = 13030117800840. Its totient is φ = 13029944663128.

The previous prime is 13030031231981. The next prime is 13030031232131. The reversal of 13030031231983 is 38913213003031.

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 13030031231983 - 21 = 13030031231981 is a prime.

It is a super-2 number, since 2×130300312319832 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13030031231981) 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, 43058260 + ... + 43359817.

It is an arithmetic number, because the mean of its divisors is an integer number (3257529450210).

Almost surely, 213030031231983 is an apocalyptic number.

13030031231983 is a deficient number, since it is larger than the sum of its proper divisors (86568857).

13030031231983 is an equidigital number, since it uses as much as digits as its factorization.

13030031231983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86568856.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 13030031231983 in words is "thirteen trillion, thirty billion, thirty-one million, two hundred thirty-one thousand, nine hundred eighty-three".

Divisors: 1 150779 86418077 13030031231983