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123054031351 = 479256897769
BaseRepresentation
bin111001010011010010…
…1111000000111110111
3102202121211212110220201
41302212211320013313
54004003313000401
6132310310541331
711614252002616
oct1624645700767
9382554773821
10123054031351
114820687a079
121ba22667847
13b7b0b38c04
145d54bb587d
15330316db01
hex1ca69781f7

123054031351 has 4 divisors (see below), whose sum is σ = 123310929600. Its totient is φ = 122797133104.

The previous prime is 123054031307. The next prime is 123054031357. The reversal of 123054031351 is 153130450321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153130450321 = 1363311232337.

It is a cyclic number.

It is not a de Polignac number, because 123054031351 - 211 = 123054029303 is a prime.

It is a super-3 number, since 3×1230540313513 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123054031357) 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, 128448406 + ... + 128449363.

It is an arithmetic number, because the mean of its divisors is an integer number (30827732400).

Almost surely, 2123054031351 is an apocalyptic number.

123054031351 is a deficient number, since it is larger than the sum of its proper divisors (256898249).

123054031351 is an equidigital number, since it uses as much as digits as its factorization.

123054031351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256898248.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 123054031351 its reverse (153130450321), we get a palindrome (276184481672).

The spelling of 123054031351 in words is "one hundred twenty-three billion, fifty-four million, thirty-one thousand, three hundred fifty-one".

Divisors: 1 479 256897769 123054031351