1323051351421 has 4 divisors (see below), whose sum is σ = 1358809496092. Its totient is φ = 1287293206752.

The previous prime is 1323051351367. The next prime is 1323051351439. The reversal of 1323051351421 is 1241531503231.

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 1240272005625 + 82779345796 = 1113675^2 + 287714^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323051351421 - 2⁹ = 1323051350909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323051351121) 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, 17879072280 + ... + 17879072353.

It is an arithmetic number, because the mean of its divisors is an integer number (339702374023).

Almost surely, 2^{1323051351421} is an apocalyptic number.

It is an amenable number.

1323051351421 is a deficient number, since it is larger than the sum of its proper divisors (35758144671).

1323051351421 is an equidigital number, since it uses as much as digits as its factorization.

1323051351421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35758144670.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 1323051351421 its reverse (1241531503231), we get a palindrome (2564582854652).

The spelling of 1323051351421 in words is "one trillion, three hundred twenty-three billion, fifty-one million, three hundred fifty-one thousand, four hundred twenty-one".