1400205311 has 2 divisors, whose sum is σ = 1400205312. Its totient is φ = 1400205310.

The previous prime is 1400205307. The next prime is 1400205337. The reversal of 1400205311 is 1135020041.

It is a weak prime.

It is an emirp because it is prime and its reverse (1135020041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1400205311 - 2² = 1400205307 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1400205311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400205011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700102655 + 700102656.

It is an arithmetic number, because the mean of its divisors is an integer number (700102656).

Almost surely, 2^1400205311 is an apocalyptic number.

1400205311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400205311 is an equidigital number, since it uses as much as digits as its factorization.

1400205311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1400205311 is about 37419.3173508016. The cubic root of 1400205311 is about 1118.7436249192.

Adding to 1400205311 its reverse (1135020041), we get a palindrome (2535225352).

The spelling of 1400205311 in words is "one billion, four hundred million, two hundred five thousand, three hundred eleven".