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12999900331 = 111181809121
BaseRepresentation
bin11000001101101101…
…01011110010101011
31020112222121100202001
430012312223302223
5203110433302311
65545544551431
7640102221025
oct140666536253
936488540661
1012999900331
115571117590
122629782577
1312c2368522
148b4741015
155114324c1
hex306dabcab

12999900331 has 4 divisors (see below), whose sum is σ = 14181709464. Its totient is φ = 11818091200.

The previous prime is 12999900293. The next prime is 12999900359. The reversal of 12999900331 is 13300999921.

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 12999900331 - 223 = 12991511723 is a prime.

It is a super-2 number, since 2×129999003312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12999900631) 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, 590904550 + ... + 590904571.

It is an arithmetic number, because the mean of its divisors is an integer number (3545427366).

Almost surely, 212999900331 is an apocalyptic number.

12999900331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12999900331 is a deficient number, since it is larger than the sum of its proper divisors (1181809133).

12999900331 is a wasteful number, since it uses less digits than its factorization.

12999900331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181809132.

The product of its (nonzero) digits is 118098, while the sum is 46.

The spelling of 12999900331 in words is "twelve billion, nine hundred ninety-nine million, nine hundred thousand, three hundred thirty-one".

Divisors: 1 11 1181809121 12999900331