1401343311 has 4 divisors (see below), whose sum is σ = 1868457752. Its totient is φ = 934228872.

The previous prime is 1401343253. The next prime is 1401343327. The reversal of 1401343311 is 1133431041.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1401343311 - 2⁶ = 1401343247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401343331) 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 in 3 ways as a sum of consecutive naturals, for example, 233557216 + ... + 233557221.

It is an arithmetic number, because the mean of its divisors is an integer number (467114438).

Almost surely, 2^1401343311 is an apocalyptic number.

1401343311 is a deficient number, since it is larger than the sum of its proper divisors (467114441).

1401343311 is an equidigital number, since it uses as much as digits as its factorization.

1401343311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467114440.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1401343311 is about 37434.5203121397. The cubic root of 1401343311 is about 1119.0466246492.

Adding to 1401343311 its reverse (1133431041), we get a palindrome (2534774352).

The spelling of 1401343311 in words is "one billion, four hundred one million, three hundred forty-three thousand, three hundred eleven".