1321011241423 has 8 divisors (see below), whose sum is σ = 1351932072656. Its totient is φ = 1290099484800.

The previous prime is 1321011241409. The next prime is 1321011241439. The reversal of 1321011241423 is 3241421101231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1321011241423 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 (1321011241483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1973658 + ... + 2556823.

It is an arithmetic number, because the mean of its divisors is an integer number (168991509082).

Almost surely, 2^{1321011241423} is an apocalyptic number.

1321011241423 is a deficient number, since it is larger than the sum of its proper divisors (30920831233).

1321011241423 is an equidigital number, since it uses as much as digits as its factorization.

1321011241423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537305.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1321011241423 its reverse (3241421101231), we get a palindrome (4562432342654).

The spelling of 1321011241423 in words is "one trillion, three hundred twenty-one billion, eleven million, two hundred forty-one thousand, four hundred twenty-three".