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13122034431 = 311397637407
BaseRepresentation
bin11000011100010001…
…00101101011111111
31020212111102102020020
430032020211223333
5203333220100211
610010030423223
7643114311102
oct141610455377
936774372206
1013122034431
115624056760
122662661b13
13131175b91c
148c6a54739
1551c00a306
hex30e225aff

13122034431 has 8 divisors (see below), whose sum is σ = 19086595584. Its totient is φ = 7952748120.

The previous prime is 13122034403. The next prime is 13122034439. The reversal of 13122034431 is 13443022131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13122034431 - 226 = 13054925567 is a prime.

It is a super-2 number, since 2×131220344312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122034439) 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 7 ways as a sum of consecutive naturals, for example, 198818671 + ... + 198818736.

It is an arithmetic number, because the mean of its divisors is an integer number (2385824448).

Almost surely, 213122034431 is an apocalyptic number.

13122034431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13122034431 is a deficient number, since it is larger than the sum of its proper divisors (5964561153).

13122034431 is a wasteful number, since it uses less digits than its factorization.

13122034431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397637421.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13122034431 its reverse (13443022131), we get a palindrome (26565056562).

The spelling of 13122034431 in words is "thirteen billion, one hundred twenty-two million, thirty-four thousand, four hundred thirty-one".

Divisors: 1 3 11 33 397637407 1192912221 4374011477 13122034431