1340030023 has 4 divisors (see below), whose sum is σ = 1341257128. Its totient is φ = 1338802920.

The previous prime is 1340029991. The next prime is 1340030039. The reversal of 1340030023 is 3200300431.

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 1340030023 - 2⁵ = 1340029991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340029979 and 1340030006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340030063) 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, 611913 + ... + 614098.

It is an arithmetic number, because the mean of its divisors is an integer number (335314282).

Almost surely, 2^1340030023 is an apocalyptic number.

1340030023 is a deficient number, since it is larger than the sum of its proper divisors (1227105).

1340030023 is a wasteful number, since it uses less digits than its factorization.

1340030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227104.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1340030023 is about 36606.4205160789. The cubic root of 1340030023 is about 1102.4820051121.

Adding to 1340030023 its reverse (3200300431), we get a palindrome (4540330454).

The spelling of 1340030023 in words is "one billion, three hundred forty million, thirty thousand, twenty-three".