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123130023023 = 717590003289
BaseRepresentation
bin111001010101100011…
…1110000110001101111
3102202211010212020220002
41302223013300301233
54004132241214043
6132322023414515
711616163632650
oct1625307606157
9382733766802
10123130023023
1148245762807
121ba43bb443b
13b7c37c49b7
145d60d17527
153309b7ebb8
hex1cab1f0c6f

123130023023 has 4 divisors (see below), whose sum is σ = 140720026320. Its totient is φ = 105540019728.

The previous prime is 123130023007. The next prime is 123130023041. The reversal of 123130023023 is 320320031321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320320031321 = 1804317753147.

It is a cyclic number.

It is not a de Polignac number, because 123130023023 - 24 = 123130023007 is a prime.

It is a super-2 number, since 2×1231300230232 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123130022986 and 123130023004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123130023083) 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, 8795001638 + ... + 8795001651.

It is an arithmetic number, because the mean of its divisors is an integer number (35180006580).

Almost surely, 2123130023023 is an apocalyptic number.

123130023023 is a deficient number, since it is larger than the sum of its proper divisors (17590003297).

123130023023 is an equidigital number, since it uses as much as digits as its factorization.

123130023023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17590003296.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123130023023 its reverse (320320031321), we get a palindrome (443450054344).

The spelling of 123130023023 in words is "one hundred twenty-three billion, one hundred thirty million, twenty-three thousand, twenty-three".

Divisors: 1 7 17590003289 123130023023