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13450242131 = 99491351919
BaseRepresentation
bin11001000011011001…
…00110100001010011
31021201101000002112222
430201230212201103
5210021230222011
610102353211255
7654211112624
oct144154464123
937641002488
1013450242131
115782346a97
122734560b2b
131364754971
1491848ba4b
1553ac3bddb
hex321b26853

13450242131 has 4 divisors (see below), whose sum is σ = 13451604000. Its totient is φ = 13448880264.

The previous prime is 13450242119. The next prime is 13450242133. The reversal of 13450242131 is 13124205431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13450242131 is a prime.

It is a super-2 number, since 2×134502421312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13450242131.

It is not an unprimeable number, because it can be changed into a prime (13450242133) 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, 666011 + ... + 685908.

It is an arithmetic number, because the mean of its divisors is an integer number (3362901000).

Almost surely, 213450242131 is an apocalyptic number.

13450242131 is a deficient number, since it is larger than the sum of its proper divisors (1361869).

13450242131 is an equidigital number, since it uses as much as digits as its factorization.

13450242131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361868.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 13450242131 its reverse (13124205431), we get a palindrome (26574447562).

The spelling of 13450242131 in words is "thirteen billion, four hundred fifty million, two hundred forty-two thousand, one hundred thirty-one".

Divisors: 1 9949 1351919 13450242131