131033332181 has 2 divisors, whose sum is σ = 131033332182. Its totient is φ = 131033332180.

The previous prime is 131033332163. The next prime is 131033332187. The reversal of 131033332181 is 181233330131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85465599025 + 45567733156 = 292345^2 + 213466^2 .

It is a cyclic number.

It is not a de Polignac number, because 131033332181 - 2¹⁴ = 131033315797 is a prime.

It is a super-2 number, since 2×131033332181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131033332187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65516666090 + 65516666091.

It is an arithmetic number, because the mean of its divisors is an integer number (65516666091).

Almost surely, 2^131033332181 is an apocalyptic number.

It is an amenable number.

131033332181 is a deficient number, since it is larger than the sum of its proper divisors (1).

131033332181 is an equidigital number, since it uses as much as digits as its factorization.

131033332181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 131033332181 in words is "one hundred thirty-one billion, thirty-three million, three hundred thirty-two thousand, one hundred eighty-one".