1340111231 has 2 divisors, whose sum is σ = 1340111232. Its totient is φ = 1340111230.

The previous prime is 1340111221. The next prime is 1340111237. The reversal of 1340111231 is 1321110431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340111231 - 2¹⁰ = 1340110207 is a prime.

It is a super-2 number, since 2×1340111231² = 3591796222904670722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340111237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670055615 + 670055616.

It is an arithmetic number, because the mean of its divisors is an integer number (670055616).

Almost surely, 2^1340111231 is an apocalyptic number.

1340111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340111231 is an equidigital number, since it uses as much as digits as its factorization.

1340111231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1340111231 is about 36607.5297036006. The cubic root of 1340111231 is about 1102.5042753968.

Adding to 1340111231 its reverse (1321110431), we get a palindrome (2661221662).

The spelling of 1340111231 in words is "one billion, three hundred forty million, one hundred eleven thousand, two hundred thirty-one".