1340332231 has 12 divisors (see below), whose sum is σ = 1595424072. Its totient is φ = 1122136848.

The previous prime is 1340332193. The next prime is 1340332247. The reversal of 1340332231 is 1322330431.

It is not a de Polignac number, because 1340332231 - 2¹¹ = 1340330183 is a prime.

It is a super-2 number, since 2×1340332231² = 3592980978914874722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340332261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315960 + ... + 320173.

It is an arithmetic number, because the mean of its divisors is an integer number (132952006).

Almost surely, 2^1340332231 is an apocalyptic number.

1340332231 is a deficient number, since it is larger than the sum of its proper divisors (255091841).

1340332231 is an equidigital number, since it uses as much as digits as its factorization.

1340332231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636190 (or 636183 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 1340332231 is about 36610.5480838515. The cubic root of 1340332231 is about 1102.5648773445.

Adding to 1340332231 its reverse (1322330431), we get a palindrome (2662662662).

The spelling of 1340332231 in words is "one billion, three hundred forty million, three hundred thirty-two thousand, two hundred thirty-one".