1405313311 has 2 divisors, whose sum is σ = 1405313312. Its totient is φ = 1405313310.

The previous prime is 1405313309. The next prime is 1405313353. The reversal of 1405313311 is 1133135041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1405313311 - 2¹ = 1405313309 is a prime.

Together with 1405313309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1405311311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702656655 + 702656656.

It is an arithmetic number, because the mean of its divisors is an integer number (702656656).

Almost surely, 2^1405313311 is an apocalyptic number.

1405313311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405313311 is an equidigital number, since it uses as much as digits as its factorization.

1405313311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1405313311 is about 37487.5087329100. The cubic root of 1405313311 is about 1120.1023798312.

Adding to 1405313311 its reverse (1133135041), we get a palindrome (2538448352).

The spelling of 1405313311 in words is "one billion, four hundred five million, three hundred thirteen thousand, three hundred eleven".