131570775481 has 2 divisors, whose sum is σ = 131570775482. Its totient is φ = 131570775480.

The previous prime is 131570775467. The next prime is 131570775491. The reversal of 131570775481 is 184577075131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85781623225 + 45789152256 = 292885^2 + 213984^2 .

It is an emirp because it is prime and its reverse (184577075131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131570775481 - 2²³ = 131562386873 is a prime.

It is a super-2 number, since 2×131570775481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131570775491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65785387740 + 65785387741.

It is an arithmetic number, because the mean of its divisors is an integer number (65785387741).

Almost surely, 2^131570775481 is an apocalyptic number.

It is an amenable number.

131570775481 is a deficient number, since it is larger than the sum of its proper divisors (1).

131570775481 is an equidigital number, since it uses as much as digits as its factorization.

131570775481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 823200, while the sum is 49.

The spelling of 131570775481 in words is "one hundred thirty-one billion, five hundred seventy million, seven hundred seventy-five thousand, four hundred eighty-one".