1031203123313 has 4 divisors (see below), whose sum is σ = 1124948861808. Its totient is φ = 937457384820.

The previous prime is 1031203123309. The next prime is 1031203123393. The reversal of 1031203123313 is 3133213021301.

1031203123313 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1031203123313 - 2² = 1031203123309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1031203123393) 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, 46872869231 + ... + 46872869252.

It is an arithmetic number, because the mean of its divisors is an integer number (281237215452).

Almost surely, 2^{1031203123313} is an apocalyptic number.

It is an amenable number.

1031203123313 is a deficient number, since it is larger than the sum of its proper divisors (93745738495).

1031203123313 is an equidigital number, since it uses as much as digits as its factorization.

1031203123313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93745738494.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1031203123313 its reverse (3133213021301), we get a palindrome (4164416144614).

The spelling of 1031203123313 in words is "one trillion, thirty-one billion, two hundred three million, one hundred twenty-three thousand, three hundred thirteen".