1340322931 has 2 divisors, whose sum is σ = 1340322932. Its totient is φ = 1340322930.

The previous prime is 1340322901. The next prime is 1340322937. The reversal of 1340322931 is 1392230431.

It is a strong prime.

It is an emirp because it is prime and its reverse (1392230431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1340322931 - 2¹⁵ = 1340290163 is a prime.

It is a super-2 number, since 2×1340322931² = 3592931118728861522, 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 1340322931.

It is not a weakly prime, because it can be changed into another prime (1340322937) 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 as a sum of consecutive naturals, namely, 670161465 + 670161466.

It is an arithmetic number, because the mean of its divisors is an integer number (670161466).

Almost surely, 2^1340322931 is an apocalyptic number.

1340322931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340322931 is an equidigital number, since it uses as much as digits as its factorization.

1340322931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1340322931 is about 36610.4210710557. The cubic root of 1340322931 is about 1102.5623272611.

The spelling of 1340322931 in words is "one billion, three hundred forty million, three hundred twenty-two thousand, nine hundred thirty-one".