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13214403031 = 34937863619
BaseRepresentation
bin11000100111010001…
…11100100111010111
31021002221020020010111
430103220330213113
5204030341344111
610023130303451
7645315400234
oct142350744727
937087206114
1013214403031
115671205645
122689587b87
13132792c9bb
148d501a78b
155251a3a21
hex313a3c9d7

13214403031 has 4 divisors (see below), whose sum is σ = 13252267000. Its totient is φ = 13176539064.

The previous prime is 13214403029. The next prime is 13214403067. The reversal of 13214403031 is 13030441231.

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 13214403031 - 21 = 13214403029 is a prime.

It is a super-2 number, since 2×132144030312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13214402993 and 13214403011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13214403011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18931461 + ... + 18932158.

It is an arithmetic number, because the mean of its divisors is an integer number (3313066750).

Almost surely, 213214403031 is an apocalyptic number.

13214403031 is a deficient number, since it is larger than the sum of its proper divisors (37863969).

13214403031 is an equidigital number, since it uses as much as digits as its factorization.

13214403031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37863968.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13214403031 its reverse (13030441231), we get a palindrome (26244844262).

The spelling of 13214403031 in words is "thirteen billion, two hundred fourteen million, four hundred three thousand, thirty-one".

Divisors: 1 349 37863619 13214403031