131403234121109 has 2 divisors, whose sum is σ = 131403234121110. Its totient is φ = 131403234121108.

The previous prime is 131403234121087. The next prime is 131403234121139. The reversal of 131403234121109 is 901121432304131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129092271686884 + 2310962434225 = 11361878^2 + 1520185^2 .

It is a cyclic number.

It is not a de Polignac number, because 131403234121109 - 2¹² = 131403234117013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131403234121139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65701617060554 + 65701617060555.

It is an arithmetic number, because the mean of its divisors is an integer number (65701617060555).

Almost surely, 2^{131403234121109} is an apocalyptic number.

It is an amenable number.

131403234121109 is a deficient number, since it is larger than the sum of its proper divisors (1).

131403234121109 is an equidigital number, since it uses as much as digits as its factorization.

131403234121109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 131403234121109 in words is "one hundred thirty-one trillion, four hundred three billion, two hundred thirty-four million, one hundred twenty-one thousand, one hundred nine".