1031203847473 has 4 divisors (see below), whose sum is σ = 1056355160868. Its totient is φ = 1006052534080.

The previous prime is 1031203847437. The next prime is 1031203847477. The reversal of 1031203847473 is 3747483021301.

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 541507600384 + 489696247089 = 735872^2 + 699783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031203847473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031203847477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12575656636 + ... + 12575656717.

It is an arithmetic number, because the mean of its divisors is an integer number (264088790217).

Almost surely, 2^{1031203847473} is an apocalyptic number.

It is an amenable number.

1031203847473 is a deficient number, since it is larger than the sum of its proper divisors (25151313395).

1031203847473 is an equidigital number, since it uses as much as digits as its factorization.

1031203847473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25151313394.

The product of its (nonzero) digits is 338688, while the sum is 43.

Adding to 1031203847473 its reverse (3747483021301), we get a palindrome (4778686868774).

It can be divided in two parts, 103120 and 3847473, that added together give a palindrome (3950593).

The spelling of 1031203847473 in words is "one trillion, thirty-one billion, two hundred three million, eight hundred forty-seven thousand, four hundred seventy-three".