131323231001 has 2 divisors, whose sum is σ = 131323231002. Its totient is φ = 131323231000.

The previous prime is 131323230977. The next prime is 131323231009. The reversal of 131323231001 is 100132323131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94285843600 + 37037387401 = 307060^2 + 192451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131323231001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (131323231009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65661615500 + 65661615501.

It is an arithmetic number, because the mean of its divisors is an integer number (65661615501).

Almost surely, 2^131323231001 is an apocalyptic number.

It is an amenable number.

131323231001 is a deficient number, since it is larger than the sum of its proper divisors (1).

131323231001 is an equidigital number, since it uses as much as digits as its factorization.

131323231001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131323231001 its reverse (100132323131), we get a palindrome (231455554132).

The spelling of 131323231001 in words is "one hundred thirty-one billion, three hundred twenty-three million, two hundred thirty-one thousand, one".