1320441131 has 4 divisors (see below), whose sum is σ = 1324119600. Its totient is φ = 1316762664.

The previous prime is 1320441127. The next prime is 1320441139. The reversal of 1320441131 is 1311440231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320441131 - 2² = 1320441127 is a prime.

It is a super-2 number, since 2×1320441131² = 3487129560873118322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320441139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1838696 + ... + 1839413.

It is an arithmetic number, because the mean of its divisors is an integer number (331029900).

Almost surely, 2^1320441131 is an apocalyptic number.

1320441131 is a deficient number, since it is larger than the sum of its proper divisors (3678469).

1320441131 is an equidigital number, since it uses as much as digits as its factorization.

1320441131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678468.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1320441131 is about 36337.8746076322. The cubic root of 1320441131 is about 1097.0834947655.

Adding to 1320441131 its reverse (1311440231), we get a palindrome (2631881362).

The spelling of 1320441131 in words is "one billion, three hundred twenty million, four hundred forty-one thousand, one hundred thirty-one".