1340246331 has 24 divisors (see below), whose sum is σ = 2025419760. Its totient is φ = 885572352.

The previous prime is 1340246293. The next prime is 1340246333. The reversal of 1340246331 is 1336420431.

1340246331 is a `hidden beast` number, since 1 + 3 + 4 + 0 + 24 + 633 + 1 = 666.

It is not a de Polignac number, because 1340246331 - 2²¹ = 1338149179 is a prime.

It is a super-2 number, since 2×1340246331² = 3592520455517923122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1340246295 and 1340246304.

It is not an unprimeable number, because it can be changed into a prime (1340246333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3055 + ... + 51863.

It is an arithmetic number, because the mean of its divisors is an integer number (84392490).

Almost surely, 2^1340246331 is an apocalyptic number.

1340246331 is a deficient number, since it is larger than the sum of its proper divisors (685173429).

1340246331 is an equidigital number, since it uses as much as digits as its factorization.

1340246331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48937 (or 48925 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1340246331 is about 36609.3749058899. The cubic root of 1340246331 is about 1102.5413228993.

Adding to 1340246331 its reverse (1336420431), we get a palindrome (2676666762).

The spelling of 1340246331 in words is "one billion, three hundred forty million, two hundred forty-six thousand, three hundred thirty-one".