131123022001 has 2 divisors, whose sum is σ = 131123022002. Its totient is φ = 131123022000.

The previous prime is 131123021951. The next prime is 131123022007. The reversal of 131123022001 is 100220321131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120447173025 + 10675848976 = 347055^2 + 103324^2 .

It is a cyclic number.

It is not a de Polignac number, because 131123022001 - 2³⁵ = 96763283633 is a prime.

It is not a weakly prime, because it can be changed into another prime (131123022007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561511000 + 65561511001.

It is an arithmetic number, because the mean of its divisors is an integer number (65561511001).

Almost surely, 2^131123022001 is an apocalyptic number.

It is an amenable number.

131123022001 is a deficient number, since it is larger than the sum of its proper divisors (1).

131123022001 is an equidigital number, since it uses as much as digits as its factorization.

131123022001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131123022001 its reverse (100220321131), we get a palindrome (231343343132).

The spelling of 131123022001 in words is "one hundred thirty-one billion, one hundred twenty-three million, twenty-two thousand, one".