1321303132231 has 4 divisors (see below), whose sum is σ = 1321365872392. Its totient is φ = 1321240392072.

The previous prime is 1321303132207. The next prime is 1321303132243. The reversal of 1321303132231 is 1322313031231.

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 1321303132231 - 2⁵ = 1321303132199 is a prime.

It is a super-2 number, since 2×1321303132231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321303132196 and 1321303132205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321303132031) 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, 31338480 + ... + 31380613.

It is an arithmetic number, because the mean of its divisors is an integer number (330341468098).

Almost surely, 2^{1321303132231} is an apocalyptic number.

1321303132231 is a deficient number, since it is larger than the sum of its proper divisors (62740161).

1321303132231 is an equidigital number, since it uses as much as digits as its factorization.

1321303132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62740160.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1321303132231 its reverse (1322313031231), we get a palindrome (2643616163462).

The spelling of 1321303132231 in words is "one trillion, three hundred twenty-one billion, three hundred three million, one hundred thirty-two thousand, two hundred thirty-one".