131223552401 has 2 divisors, whose sum is σ = 131223552402. Its totient is φ = 131223552400.

The previous prime is 131223552359. The next prime is 131223552437. The reversal of 131223552401 is 104255322131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118991192401 + 12232360000 = 344951^2 + 110600^2 .

It is an emirp because it is prime and its reverse (104255322131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131223552401 - 2³⁴ = 114043683217 is a prime.

It is not a weakly prime, because it can be changed into another prime (131223552301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611776200 + 65611776201.

It is an arithmetic number, because the mean of its divisors is an integer number (65611776201).

Almost surely, 2^131223552401 is an apocalyptic number.

It is an amenable number.

131223552401 is a deficient number, since it is larger than the sum of its proper divisors (1).

131223552401 is an equidigital number, since it uses as much as digits as its factorization.

131223552401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 131223552401 its reverse (104255322131), we get a palindrome (235478874532).

The spelling of 131223552401 in words is "one hundred thirty-one billion, two hundred twenty-three million, five hundred fifty-two thousand, four hundred one".