1203230231321 has 4 divisors (see below), whose sum is σ = 1203233998692. Its totient is φ = 1203226463952.

The previous prime is 1203230231311. The next prime is 1203230231327. The reversal of 1203230231321 is 1231320323021.

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 640902718096 + 562327513225 = 800564^2 + 749885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203230231321 - 2⁶ = 1203230231257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203230231327) 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, 1355186 + ... + 2059851.

It is an arithmetic number, because the mean of its divisors is an integer number (300808499673).

Almost surely, 2^{1203230231321} is an apocalyptic number.

It is an amenable number.

1203230231321 is a deficient number, since it is larger than the sum of its proper divisors (3767371).

1203230231321 is an equidigital number, since it uses as much as digits as its factorization.

1203230231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767370.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1203230231321 its reverse (1231320323021), we get a palindrome (2434550554342).

The spelling of 1203230231321 in words is "one trillion, two hundred three billion, two hundred thirty million, two hundred thirty-one thousand, three hundred twenty-one".