1340210323 has 4 divisors (see below), whose sum is σ = 1340294368. Its totient is φ = 1340126280.

The previous prime is 1340210281. The next prime is 1340210357. The reversal of 1340210323 is 3230120431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1340210323 - 2²⁵ = 1306655891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340210323.

It is not an unprimeable number, because it can be changed into a prime (1340210423) 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, 9936 + ... + 52717.

It is an arithmetic number, because the mean of its divisors is an integer number (335073592).

Almost surely, 2^1340210323 is an apocalyptic number.

1340210323 is a deficient number, since it is larger than the sum of its proper divisors (84045).

1340210323 is an equidigital number, since it uses as much as digits as its factorization.

1340210323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84044.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1340210323 is about 36608.8831159870. The cubic root of 1340210323 is about 1102.5314489275.

Adding to 1340210323 its reverse (3230120431), we get a palindrome (4570330754).

The spelling of 1340210323 in words is "one billion, three hundred forty million, two hundred ten thousand, three hundred twenty-three".