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123212323 = 1321794073
BaseRepresentation
bin1110101100000…
…01001000100011
322120211211112101
413112001020203
5223020243243
620120511231
73024200413
oct726011043
9276754471
10123212323
1163606273
123531b517
131c6b0100
1412514643
15ac3c54d
hex7581223

123212323 has 12 divisors (see below), whose sum is σ = 134197560. Its totient is φ = 113071296.

The previous prime is 123212293. The next prime is 123212347. The reversal of 123212323 is 323212321.

123212323 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 123212323 - 213 = 123204131 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 123212323.

It is not an unprimeable number, because it can be changed into a prime (123212423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28215 + ... + 32287.

It is an arithmetic number, because the mean of its divisors is an integer number (11183130).

Almost surely, 2123212323 is an apocalyptic number.

123212323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123212323 is a deficient number, since it is larger than the sum of its proper divisors (10985237).

123212323 is a wasteful number, since it uses less digits than its factorization.

123212323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278 (or 4265 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 123212323 is about 11100.1046391464. The cubic root of 123212323 is about 497.6049767111.

Adding to 123212323 its reverse (323212321), we get a palindrome (446424644).

The spelling of 123212323 in words is "one hundred twenty-three million, two hundred twelve thousand, three hundred twenty-three".

Divisors: 1 13 169 179 2327 4073 30251 52949 688337 729067 9477871 123212323