10123203223513 has 4 divisors (see below), whose sum is σ = 10123510308660. Its totient is φ = 10122896138368.

The previous prime is 10123203223493. The next prime is 10123203223561. The reversal of 10123203223513 is 31532230232101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1985808000969 + 8137395222544 = 1409187^2 + 2852612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10123203223513 is a prime.

It is a super-2 number, since 2×10123203223513² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10123203223813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153493120 + ... + 153559057.

It is an arithmetic number, because the mean of its divisors is an integer number (2530877577165).

Almost surely, 2^{10123203223513} is an apocalyptic number.

It is an amenable number.

10123203223513 is a deficient number, since it is larger than the sum of its proper divisors (307085147).

10123203223513 is an equidigital number, since it uses as much as digits as its factorization.

10123203223513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307085146.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 10123203223513 its reverse (31532230232101), we get a palindrome (41655433455614).

The spelling of 10123203223513 in words is "ten trillion, one hundred twenty-three billion, two hundred three million, two hundred twenty-three thousand, five hundred thirteen".