123003142013 has 4 divisors (see below), whose sum is σ = 124271215740. Its totient is φ = 121735068288.

The previous prime is 123003141977. The next prime is 123003142051. The reversal of 123003142013 is 310241300321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310241300321 = 563 ⋅551050267.

It can be written as a sum of positive squares in 2 ways, for example, as 101157710809 + 21845431204 = 318053^2 + 147802^2 .

It is not a de Polignac number, because 123003142013 - 2⁸ = 123003141757 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 (123003148013) 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, 634036718 + ... + 634036911.

It is an arithmetic number, because the mean of its divisors is an integer number (31067803935).

Almost surely, 2^123003142013 is an apocalyptic number.

It is an amenable number.

123003142013 is a deficient number, since it is larger than the sum of its proper divisors (1268073727).

123003142013 is an equidigital number, since it uses as much as digits as its factorization.

123003142013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268073726.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123003142013 its reverse (310241300321), we get a palindrome (433244442334).

The spelling of 123003142013 in words is "one hundred twenty-three billion, three million, one hundred forty-two thousand, thirteen".