1013203132321 has 4 divisors (see below), whose sum is σ = 1013205495700. Its totient is φ = 1013200768944.

The previous prime is 1013203132297. The next prime is 1013203132351. The reversal of 1013203132321 is 1232313023101.

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 517340701696 + 495862430625 = 719264^2 + 704175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013203132321 - 2⁵ = 1013203132289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013203132292 and 1013203132301.

It is not an unprimeable number, because it can be changed into a prime (1013203132351) 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, 337686 + ... + 1463023.

It is an arithmetic number, because the mean of its divisors is an integer number (253301373925).

Almost surely, 2^{1013203132321} is an apocalyptic number.

It is an amenable number.

1013203132321 is a deficient number, since it is larger than the sum of its proper divisors (2363379).

1013203132321 is an equidigital number, since it uses as much as digits as its factorization.

1013203132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363378.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1013203132321 its reverse (1232313023101), we get a palindrome (2245516155422).

The spelling of 1013203132321 in words is "one trillion, thirteen billion, two hundred three million, one hundred thirty-two thousand, three hundred twenty-one".