1340000331 has 4 divisors (see below), whose sum is σ = 1786667112. Its totient is φ = 893333552.

The previous prime is 1340000323. The next prime is 1340000339. The reversal of 1340000331 is 1330000431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330000431 = 3 ⋅443333477.

It is an interprime number because it is at equal distance from previous prime (1340000323) and next prime (1340000339).

It is a cyclic number.

It is not a de Polignac number, because 1340000331 - 2³ = 1340000323 is a prime.

It is a super-2 number, since 2×1340000331² = 3591201774160219122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1340000331.

It is not an unprimeable number, because it can be changed into a prime (1340000339) 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, 223333386 + ... + 223333391.

It is an arithmetic number, because the mean of its divisors is an integer number (446666778).

Almost surely, 2^1340000331 is an apocalyptic number.

1340000331 is a deficient number, since it is larger than the sum of its proper divisors (446666781).

1340000331 is an equidigital number, since it uses as much as digits as its factorization.

1340000331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446666780.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1340000331 is about 36606.0149565614. The cubic root of 1340000331 is about 1102.4738622256.

Adding to 1340000331 its reverse (1330000431), we get a palindrome (2670000762).

The spelling of 1340000331 in words is "one billion, three hundred forty million, three hundred thirty-one", and thus it is an aban number.