131030221204 has 6 divisors (see below), whose sum is σ = 229302887114. Its totient is φ = 65515110600.

The previous prime is 131030221163. The next prime is 131030221237. The reversal of 131030221204 is 402122030131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 76563996804 + 54466224400 = 276702^2 + 233380^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16378777647 + ... + 16378777654.

Almost surely, 2^131030221204 is an apocalyptic number.

It is an amenable number.

131030221204 is a deficient number, since it is larger than the sum of its proper divisors (98272665910).

131030221204 is a wasteful number, since it uses less digits than its factorization.

131030221204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32757555305 (or 32757555303 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 131030221204 its reverse (402122030131), we get a palindrome (533152251335).

The spelling of 131030221204 in words is "one hundred thirty-one billion, thirty million, two hundred twenty-one thousand, two hundred four".