131243211304 has 16 divisors (see below), whose sum is σ = 254566574100. Its totient is φ = 63358791552.

The previous prime is 131243211301. The next prime is 131243211313. The reversal of 131243211304 is 403112342131.

It can be written as a sum of positive squares in 2 ways, for example, as 130394654404 + 848556900 = 361102^2 + 29130^2 .

It is not an unprimeable number, because it can be changed into a prime (131243211301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282851517 + ... + 282851980.

Almost surely, 2^131243211304 is an apocalyptic number.

It is an amenable number.

131243211304 is a deficient number, since it is larger than the sum of its proper divisors (123323362796).

131243211304 is a wasteful number, since it uses less digits than its factorization.

131243211304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565703532 (or 565703528 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 131243211304 its reverse (403112342131), we get a palindrome (534355553435).

The spelling of 131243211304 in words is "one hundred thirty-one billion, two hundred forty-three million, two hundred eleven thousand, three hundred four".