1310131311 has 4 divisors (see below), whose sum is σ = 1746841752. Its totient is φ = 873420872.

The previous prime is 1310131307. The next prime is 1310131349. The reversal of 1310131311 is 1131310131.

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 1310131311 - 2² = 1310131307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310132311) 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, 218355216 + ... + 218355221.

It is an arithmetic number, because the mean of its divisors is an integer number (436710438).

Almost surely, 2^1310131311 is an apocalyptic number.

1310131311 is a deficient number, since it is larger than the sum of its proper divisors (436710441).

1310131311 is an equidigital number, since it uses as much as digits as its factorization.

1310131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436710440.

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

The square root of 1310131311 is about 36195.7360886611. The cubic root of 1310131311 is about 1094.2207395362.

Adding to 1310131311 its reverse (1131310131), we get a palindrome (2441441442).

The spelling of 1310131311 in words is "one billion, three hundred ten million, one hundred thirty-one thousand, three hundred eleven".