131131321201 has 4 divisors (see below), whose sum is σ = 131133808804. Its totient is φ = 131128833600.

The previous prime is 131131321141. The next prime is 131131321229. The reversal of 131131321201 is 102123131131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 112912800625 + 18218520576 = 336025^2 + 134976^2 .

It is a cyclic number.

It is not a de Polignac number, because 131131321201 - 2⁹ = 131131320689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131131321801) 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, 1162980 + ... + 1270741.

It is an arithmetic number, because the mean of its divisors is an integer number (32783452201).

Almost surely, 2^131131321201 is an apocalyptic number.

It is an amenable number.

131131321201 is a deficient number, since it is larger than the sum of its proper divisors (2487603).

131131321201 is an equidigital number, since it uses as much as digits as its factorization.

131131321201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487602.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 131131321201 its reverse (102123131131), we get a palindrome (233254452332).

The spelling of 131131321201 in words is "one hundred thirty-one billion, one hundred thirty-one million, three hundred twenty-one thousand, two hundred one".