1240412311 has 2 divisors, whose sum is σ = 1240412312. Its totient is φ = 1240412310.

The previous prime is 1240412291. The next prime is 1240412347. The reversal of 1240412311 is 1132140421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240412311 - 2⁵ = 1240412279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240412611) 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 as a sum of consecutive naturals, namely, 620206155 + 620206156.

It is an arithmetic number, because the mean of its divisors is an integer number (620206156).

Almost surely, 2^1240412311 is an apocalyptic number.

1240412311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240412311 is an equidigital number, since it uses as much as digits as its factorization.

1240412311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1240412311 is about 35219.4876595330. The cubic root of 1240412311 is about 1074.4561333290.

Adding to 1240412311 its reverse (1132140421), we get a palindrome (2372552732).

The spelling of 1240412311 in words is "one billion, two hundred forty million, four hundred twelve thousand, three hundred eleven".