131334101433781 has 2 divisors, whose sum is σ = 131334101433782. Its totient is φ = 131334101433780.

The previous prime is 131334101433739. The next prime is 131334101433793. The reversal of 131334101433781 is 187334101433131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103870055855556 + 27464045578225 = 10191666^2 + 5240615^2 .

It is a cyclic number.

It is not a de Polignac number, because 131334101433781 - 2¹³ = 131334101425589 is a prime.

It is a super-2 number, since 2×131334101433781² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131334101433721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65667050716890 + 65667050716891.

It is an arithmetic number, because the mean of its divisors is an integer number (65667050716891).

Almost surely, 2^{131334101433781} is an apocalyptic number.

It is an amenable number.

131334101433781 is a deficient number, since it is larger than the sum of its proper divisors (1).

131334101433781 is an equidigital number, since it uses as much as digits as its factorization.

131334101433781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 131334101433781 in words is "one hundred thirty-one trillion, three hundred thirty-four billion, one hundred one million, four hundred thirty-three thousand, seven hundred eighty-one".