131403520314421 has 2 divisors, whose sum is σ = 131403520314422. Its totient is φ = 131403520314420.

The previous prime is 131403520314403. The next prime is 131403520314431. The reversal of 131403520314421 is 124413025304131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70024913511921 + 61378606802500 = 8368089^2 + 7834450^2 .

It is a cyclic number.

It is not a de Polignac number, because 131403520314421 - 2⁷ = 131403520314293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131403520314431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65701760157210 + 65701760157211.

It is an arithmetic number, because the mean of its divisors is an integer number (65701760157211).

Almost surely, 2^{131403520314421} is an apocalyptic number.

It is an amenable number.

131403520314421 is a deficient number, since it is larger than the sum of its proper divisors (1).

131403520314421 is an equidigital number, since it uses as much as digits as its factorization.

131403520314421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 131403520314421 its reverse (124413025304131), we get a palindrome (255816545618552).

The spelling of 131403520314421 in words is "one hundred thirty-one trillion, four hundred three billion, five hundred twenty million, three hundred fourteen thousand, four hundred twenty-one".