1405340211323 has 4 divisors (see below), whose sum is σ = 1453800218640. Its totient is φ = 1356880204008.

The previous prime is 1405340211281. The next prime is 1405340211329. The reversal of 1405340211323 is 3231120435041.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1405340211323 - 2¹⁸ = 1405339949179 is a prime.

It is a super-2 number, since 2×1405340211323² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 48460007287 = 1405340211323 / (1 + 4 + 0 + 5 + 3 + 4 + 0 + 2 + 1 + 1 + 3 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405340211329) 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 3 ways as a sum of consecutive naturals, for example, 24230003615 + ... + 24230003672.

It is an arithmetic number, because the mean of its divisors is an integer number (363450054660).

Almost surely, 2^{1405340211323} is an apocalyptic number.

1405340211323 is a deficient number, since it is larger than the sum of its proper divisors (48460007317).

1405340211323 is an equidigital number, since it uses as much as digits as its factorization.

1405340211323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48460007316.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1405340211323 its reverse (3231120435041), we get a palindrome (4636460646364).

The spelling of 1405340211323 in words is "one trillion, four hundred five billion, three hundred forty million, two hundred eleven thousand, three hundred twenty-three".