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1311033401 = 3097142331

1311033401 has 4 divisors (see below), whose sum is σ = 1311106704. Its totient is φ = 1310960100.

The previous prime is 1311033397. The next prime is 1311033433. The reversal of 1311033401 is 1043301131.

Adding to 1311033401 its reverse (1043301131), we get a palindrome (2354334532).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1311033401 - 22 = 1311033397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311033401.

It is not an unprimeable number, because it can be changed into a prime (1311033461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9806 + ... + 52136.

It is an arithmetic number, because the mean of its divisors is an integer number (327776676).

Almost surely, 21311033401 is an apocalyptic number.

It is an amenable number.

1311033401 is a deficient number, since it is larger than the sum of its proper divisors (73303).

1311033401 is an equidigital number, since it uses as much as digits as its factorization.

1311033401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73302.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311033401 is about 36208.1952187623. The cubic root of 1311033401 is about 1094.4718235593.

The spelling of 1311033401 in words is "one billion, three hundred eleven million, thirty-three thousand, four hundred one".

Divisors: 1 30971 42331 1311033401