1020031013123 has 4 divisors (see below), whose sum is σ = 1021403868528. Its totient is φ = 1018658157720.

The previous prime is 1020031013087. The next prime is 1020031013137. The reversal of 1020031013123 is 3213101300201.

1020031013123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1020031013123 - 2²² = 1020026818819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020031013723) 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, 686426588 + ... + 686428073.

It is an arithmetic number, because the mean of its divisors is an integer number (255350967132).

Almost surely, 2^{1020031013123} is an apocalyptic number.

1020031013123 is a deficient number, since it is larger than the sum of its proper divisors (1372855405).

1020031013123 is an equidigital number, since it uses as much as digits as its factorization.

1020031013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372855404.

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

Adding to 1020031013123 its reverse (3213101300201), we get a palindrome (4233132313324).

The spelling of 1020031013123 in words is "one trillion, twenty billion, thirty-one million, thirteen thousand, one hundred twenty-three".