131313311312 has 10 divisors (see below), whose sum is σ = 254419540698. Its totient is φ = 65656655648.

The previous prime is 131313311267. The next prime is 131313311321. The reversal of 131313311312 is 213113313131.

It can be written as a sum of positive squares in only one way, i.e., 71671856656 + 59641454656 = 267716^2 + 244216^2 .

It is a super-2 number, since 2×131313311312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4103540963 + ... + 4103540994.

Almost surely, 2^131313311312 is an apocalyptic number.

It is an amenable number.

131313311312 is a deficient number, since it is larger than the sum of its proper divisors (123106229386).

131313311312 is an equidigital number, since it uses as much as digits as its factorization.

131313311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8207081965 (or 8207081959 counting only the distinct ones).

The product of its digits is 486, while the sum is 23.

Adding to 131313311312 its reverse (213113313131), we get a palindrome (344426624443).

The spelling of 131313311312 in words is "one hundred thirty-one billion, three hundred thirteen million, three hundred eleven thousand, three hundred twelve".