1340131999 has 2 divisors, whose sum is σ = 1340132000. Its totient is φ = 1340131998.

The previous prime is 1340131951. The next prime is 1340132051. The reversal of 1340131999 is 9991310431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340131999 - 2¹¹ = 1340129951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340131909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670065999 + 670066000.

It is an arithmetic number, because the mean of its divisors is an integer number (670066000).

Almost surely, 2^1340131999 is an apocalyptic number.

1340131999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340131999 is an equidigital number, since it uses as much as digits as its factorization.

1340131999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 1340131999 is about 36607.8133599919. The cubic root of 1340131999 is about 1102.5099706182.

The spelling of 1340131999 in words is "one billion, three hundred forty million, one hundred thirty-one thousand, nine hundred ninety-nine".