1401311311 has 2 divisors, whose sum is σ = 1401311312. Its totient is φ = 1401311310.

The previous prime is 1401311299. The next prime is 1401311347. The reversal of 1401311311 is 1131131041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1401311311 - 2¹³ = 1401303119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401311371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700655655 + 700655656.

It is an arithmetic number, because the mean of its divisors is an integer number (700655656).

Almost surely, 2^1401311311 is an apocalyptic number.

1401311311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401311311 is an equidigital number, since it uses as much as digits as its factorization.

1401311311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1401311311 is about 37434.0928967165. The cubic root of 1401311311 is about 1119.0381066879.

Adding to 1401311311 its reverse (1131131041), we get a palindrome (2532442352).

The spelling of 1401311311 in words is "one billion, four hundred one million, three hundred eleven thousand, three hundred eleven".