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123430410013 = 383322272611
BaseRepresentation
bin111001011110100000…
…1101001011100011101
3102210121002002111101011
41302331001221130131
54010241141110023
6132411514015221
711626502113531
oct1627501513435
9383532074334
10123430410013
114838a280a19
121bb08717511
13b840ac9991
145d8cb8bbc1
15332621850d
hex1cbd06971d

123430410013 has 4 divisors (see below), whose sum is σ = 123752683008. Its totient is φ = 123108137020.

The previous prime is 123430409939. The next prime is 123430410023. The reversal of 123430410013 is 310014034321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123430410013 - 213 = 123430401821 is a prime.

It is a super-2 number, since 2×1234304100132 (a number of 23 digits) contains 22 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 (123430410023) 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, 161135923 + ... + 161136688.

It is an arithmetic number, because the mean of its divisors is an integer number (30938170752).

Almost surely, 2123430410013 is an apocalyptic number.

It is an amenable number.

123430410013 is a deficient number, since it is larger than the sum of its proper divisors (322272995).

123430410013 is an equidigital number, since it uses as much as digits as its factorization.

123430410013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322272994.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123430410013 its reverse (310014034321), we get a palindrome (433444444334).

The spelling of 123430410013 in words is "one hundred twenty-three billion, four hundred thirty million, four hundred ten thousand, thirteen".

Divisors: 1 383 322272611 123430410013