1340021513 has 8 divisors (see below), whose sum is σ = 1371681696. Its totient is φ = 1308384000.

The previous prime is 1340021509. The next prime is 1340021519. The reversal of 1340021513 is 3151200431.

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

It is a cyclic number.

It is not a de Polignac number, because 1340021513 - 2² = 1340021509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340021519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203198 + ... + 209688.

It is an arithmetic number, because the mean of its divisors is an integer number (171460212).

Almost surely, 2^1340021513 is an apocalyptic number.

It is an amenable number.

1340021513 is a deficient number, since it is larger than the sum of its proper divisors (31660183).

1340021513 is an equidigital number, since it uses as much as digits as its factorization.

1340021513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11335.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1340021513 is about 36606.3042794544. The cubic root of 1340021513 is about 1102.4796712983.

Adding to 1340021513 its reverse (3151200431), we get a palindrome (4491221944).

The spelling of 1340021513 in words is "one billion, three hundred forty million, twenty-one thousand, five hundred thirteen".