1311131301 has 4 divisors (see below), whose sum is σ = 1748175072. Its totient is φ = 874087532.

The previous prime is 1311131287. The next prime is 1311131303. The reversal of 1311131301 is 1031311131.

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.

It is a cyclic number.

It is not a de Polignac number, because 1311131301 - 2⁹ = 1311130789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311131303) 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, 218521881 + ... + 218521886.

It is an arithmetic number, because the mean of its divisors is an integer number (437043768).

Almost surely, 2^1311131301 is an apocalyptic number.

It is an amenable number.

1311131301 is a deficient number, since it is larger than the sum of its proper divisors (437043771).

1311131301 is an equidigital number, since it uses as much as digits as its factorization.

1311131301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437043770.

The product of its (nonzero) digits is 27, while the sum is 15.

The square root of 1311131301 is about 36209.5470974162. The cubic root of 1311131301 is about 1094.4990657141.

Adding to 1311131301 its reverse (1031311131), we get a palindrome (2342442432).

The spelling of 1311131301 in words is "one billion, three hundred eleven million, one hundred thirty-one thousand, three hundred one".