1340113021 has 8 divisors (see below), whose sum is σ = 1473905664. Its totient is φ = 1210707120.

The previous prime is 1340112979. The next prime is 1340113037. The reversal of 1340113021 is 1203110431.

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 1340113021 - 2¹¹ = 1340110973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340112986 and 1340113004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340110021) 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, 1096045 + ... + 1097266.

It is an arithmetic number, because the mean of its divisors is an integer number (184238208).

Almost surely, 2^1340113021 is an apocalyptic number.

It is an amenable number.

1340113021 is a deficient number, since it is larger than the sum of its proper divisors (133792643).

1340113021 is a wasteful number, since it uses less digits than its factorization.

1340113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193371.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1340113021 is about 36607.5541521146. The cubic root of 1340113021 is about 1102.5047662719.

Adding to 1340113021 its reverse (1203110431), we get a palindrome (2543223452).

The spelling of 1340113021 in words is "one billion, three hundred forty million, one hundred thirteen thousand, twenty-one".