131322001312 has 24 divisors (see below), whose sum is σ = 258548314500. Its totient is φ = 65658937344.

The previous prime is 131322001271. The next prime is 131322001331. The reversal of 131322001312 is 213100223131.

It can be written as a sum of positive squares in 2 ways, for example, as 98021591056 + 33300410256 = 313084^2 + 182484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131322001312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792864 + ... + 1864672.

Almost surely, 2^131322001312 is an apocalyptic number.

It is an amenable number.

131322001312 is a deficient number, since it is larger than the sum of its proper divisors (127226313188).

131322001312 is an equidigital number, since it uses as much as digits as its factorization.

131322001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128968 (or 128960 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131322001312 its reverse (213100223131), we get a palindrome (344422224443).

The spelling of 131322001312 in words is "one hundred thirty-one billion, three hundred twenty-two million, one thousand, three hundred twelve".