10513105123 has 2 divisors, whose sum is σ = 10513105124. Its totient is φ = 10513105122.

The previous prime is 10513105103. The next prime is 10513105181. The reversal of 10513105123 is 32150131501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10513105123 - 2⁵ = 10513105091 is a prime.

It is a super-2 number, since 2×10513105123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10513105094 and 10513105103.

It is not a weakly prime, because it can be changed into another prime (10513105103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5256552561 + 5256552562.

It is an arithmetic number, because the mean of its divisors is an integer number (5256552562).

Almost surely, 2^10513105123 is an apocalyptic number.

10513105123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10513105123 is an equidigital number, since it uses as much as digits as its factorization.

10513105123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 22.

Adding to 10513105123 its reverse (32150131501), we get a palindrome (42663236624).

The spelling of 10513105123 in words is "ten billion, five hundred thirteen million, one hundred five thousand, one hundred twenty-three".