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13122323112 = 2331549335291
BaseRepresentation
bin11000011100010011…
…01100001010101000
31020212111222002020010
430032021230022220
5203333303314422
610010040531520
7643116622533
oct141611541250
936774862203
1013122323112
115624233638
122662780ba0
131311830142
148c6acba1a
1551c065b0c
hex30e26c2a8

13122323112 has 32 divisors (see below), whose sum is σ = 32808854880. Its totient is φ = 4373701440.

The previous prime is 13122323107. The next prime is 13122323117. The reversal of 13122323112 is 21132322131.

It is an interprime number because it is at equal distance from previous prime (13122323107) and next prime (13122323117).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (13122323117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354187 + ... + 389477.

It is an arithmetic number, because the mean of its divisors is an integer number (1025276715).

Almost surely, 213122323112 is an apocalyptic number.

13122323112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13122323112 is an abundant number, since it is smaller than the sum of its proper divisors (19686531768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13122323112 is a wasteful number, since it uses less digits than its factorization.

13122323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50793 (or 50789 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 13122323112 its reverse (21132322131), we get a palindrome (34254645243).

The spelling of 13122323112 in words is "thirteen billion, one hundred twenty-two million, three hundred twenty-three thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 24 15493 30986 35291 46479 61972 70582 92958 105873 123944 141164 185916 211746 282328 371832 423492 846984 546763463 1093526926 1640290389 2187053852 3280580778 4374107704 6561161556 13122323112