1340013423 has 64 divisors (see below), whose sum is σ = 2235202560. Its totient is φ = 696563712.

The previous prime is 1340013421. The next prime is 1340013431. The reversal of 1340013423 is 3243100431.

It is not a de Polignac number, because 1340013423 - 2¹ = 1340013421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1340013423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340013421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3024640 + ... + 3025082.

It is an arithmetic number, because the mean of its divisors is an integer number (34925040).

Almost surely, 2^1340013423 is an apocalyptic number.

1340013423 is a deficient number, since it is larger than the sum of its proper divisors (895189137).

1340013423 is a wasteful number, since it uses less digits than its factorization.

1340013423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1340013423 is about 36606.1937791953. The cubic root of 1340013423 is about 1102.4774526577.

Adding to 1340013423 its reverse (3243100431), we get a palindrome (4583113854).

The spelling of 1340013423 in words is "one billion, three hundred forty million, thirteen thousand, four hundred twenty-three".