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13124121053 = 103127418651
BaseRepresentation
bin11000011100100001…
…00011000111011101
31020212122100102112112
430032100203013131
5203334233333203
610010143243405
7643141121411
oct141620430735
936778312475
1013124121053
11562525143a
1226632a9565
13131200c604
148c7038d41
1551c2bd6d8
hex30e4231dd

13124121053 has 4 divisors (see below), whose sum is σ = 13251539808. Its totient is φ = 12996702300.

The previous prime is 13124121037. The next prime is 13124121067. The reversal of 13124121053 is 35012142131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35012142131 = 129732698847.

It is a cyclic number.

It is not a de Polignac number, because 13124121053 - 24 = 13124121037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124121553) 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, 63709223 + ... + 63709428.

It is an arithmetic number, because the mean of its divisors is an integer number (3312884952).

Almost surely, 213124121053 is an apocalyptic number.

It is an amenable number.

13124121053 is a deficient number, since it is larger than the sum of its proper divisors (127418755).

13124121053 is a wasteful number, since it uses less digits than its factorization.

13124121053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127418754.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 13124121053 its reverse (35012142131), we get a palindrome (48136263184).

The spelling of 13124121053 in words is "thirteen billion, one hundred twenty-four million, one hundred twenty-one thousand, fifty-three".

Divisors: 1 103 127418651 13124121053