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13123012052 = 2210331851971
BaseRepresentation
bin11000011100011000…
…10100010111010100
31020212120021002021102
430032030110113110
5203333442341202
610010103405232
7643125522233
oct141614242724
936776232242
1013123012052
115624664207
122662a53818
131311a118b7
148c6c2ab1a
1551c14ed02
hex30e3145d4

13123012052 has 12 divisors (see below), whose sum is σ = 23188235616. Its totient is φ = 6497801880.

The previous prime is 13123012051. The next prime is 13123012069. The reversal of 13123012052 is 25021032131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123012051) 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, 15925574 + ... + 15926397.

It is an arithmetic number, because the mean of its divisors is an integer number (1932352968).

Almost surely, 213123012052 is an apocalyptic number.

It is an amenable number.

13123012052 is a deficient number, since it is larger than the sum of its proper divisors (10065223564).

13123012052 is a wasteful number, since it uses less digits than its factorization.

13123012052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31852078 (or 31852076 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 13123012052 its reverse (25021032131), we get a palindrome (38144044183).

The spelling of 13123012052 in words is "thirteen billion, one hundred twenty-three million, twelve thousand, fifty-two".

Divisors: 1 2 4 103 206 412 31851971 63703942 127407884 3280753013 6561506026 13123012052