1311201441 has 24 divisors (see below), whose sum is σ = 2110103424. Its totient is φ = 777756960.

The previous prime is 1311201431. The next prime is 1311201469. The reversal of 1311201441 is 1441021131.

1311201441 is a `hidden beast` number, since 13 + 11 + 201 + 441 = 666.

It is not a de Polignac number, because 1311201441 - 2⁶ = 1311201377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311201431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136246 + ... + 145551.

It is an arithmetic number, because the mean of its divisors is an integer number (87920976).

Almost surely, 2^1311201441 is an apocalyptic number.

1311201441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1311201441 is a deficient number, since it is larger than the sum of its proper divisors (798901983).

1311201441 is a wasteful number, since it uses less digits than its factorization.

1311201441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281861 (or 281858 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1311201441 is about 36210.5156135618. The cubic root of 1311201441 is about 1094.5185823955.

Adding to 1311201441 its reverse (1441021131), we get a palindrome (2752222572).

The spelling of 1311201441 in words is "one billion, three hundred eleven million, two hundred one thousand, four hundred forty-one".