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123031025143 = 1311311836701
BaseRepresentation
bin111001010010100111…
…0000111010111110111
3102202120020120122022221
41302211032013113313
54003431420301033
6132304125503211
711613552313255
oct1624516072767
9382506518287
10123031025143
11481a4896184
121ba16a11b07
13b7a9142380
145d51b075d5
15330112712d
hex1ca53875f7

123031025143 has 8 divisors (see below), whose sum is σ = 132506822336. Its totient is φ = 113556924000.

The previous prime is 123031025099. The next prime is 123031025203. The reversal of 123031025143 is 341520130321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123031025143 - 221 = 123028927991 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 (123031025443) 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, 271308 + ... + 565393.

It is an arithmetic number, because the mean of its divisors is an integer number (16563352792).

Almost surely, 2123031025143 is an apocalyptic number.

123031025143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123031025143 is a deficient number, since it is larger than the sum of its proper divisors (9475797193).

123031025143 is a wasteful number, since it uses less digits than its factorization.

123031025143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848025.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 123031025143 its reverse (341520130321), we get a palindrome (464551155464).

The spelling of 123031025143 in words is "one hundred twenty-three billion, thirty-one million, twenty-five thousand, one hundred forty-three".

Divisors: 1 13 11311 147043 836701 10877113 9463925011 123031025143