10123031020013 has 4 divisors (see below), whose sum is σ = 10123046242140. Its totient is φ = 10123015797888.

The previous prime is 10123031020009. The next prime is 10123031020043. The reversal of 10123031020013 is 31002013032101.

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 3701479709929 + 6421551310084 = 1923923^2 + 2534078^2 .

It is a cyclic number.

It is not a de Polignac number, because 10123031020013 - 2² = 10123031020009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123031019973 and 10123031020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123031020043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6565670 + ... + 7959527.

It is an arithmetic number, because the mean of its divisors is an integer number (2530761560535).

Almost surely, 2^{10123031020013} is an apocalyptic number.

It is an amenable number.

10123031020013 is a deficient number, since it is larger than the sum of its proper divisors (15222127).

10123031020013 is an equidigital number, since it uses as much as digits as its factorization.

10123031020013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15222126.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 10123031020013 its reverse (31002013032101), we get a palindrome (41125044052114).

The spelling of 10123031020013 in words is "ten trillion, one hundred twenty-three billion, thirty-one million, twenty thousand, thirteen".