1340004031 has 4 divisors (see below), whose sum is σ = 1340128512. Its totient is φ = 1339879552.

The previous prime is 1340004023. The next prime is 1340004077. The reversal of 1340004031 is 1304000431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1304000431 = 67 ⋅19462693.

It is a cyclic number.

It is not a de Polignac number, because 1340004031 - 2³ = 1340004023 is a prime.

It is a super-2 number, since 2×1340004031² = 3591221606192497922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340003996 and 1340004014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340004011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44386 + ... + 68191.

It is an arithmetic number, because the mean of its divisors is an integer number (335032128).

Almost surely, 2^1340004031 is an apocalyptic number.

1340004031 is a deficient number, since it is larger than the sum of its proper divisors (124481).

1340004031 is a wasteful number, since it uses less digits than its factorization.

1340004031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124480.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1340004031 is about 36606.0654946690. The cubic root of 1340004031 is about 1102.4748769391.

Adding to 1340004031 its reverse (1304000431), we get a palindrome (2644004462).

The spelling of 1340004031 in words is "one billion, three hundred forty million, four thousand, thirty-one".