131178342331 has 2 divisors, whose sum is σ = 131178342332. Its totient is φ = 131178342330.

The previous prime is 131178342319. The next prime is 131178342341. The reversal of 131178342331 is 133243871131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131178342331 - 2¹³ = 131178334139 is a prime.

It is a super-2 number, since 2×131178342331² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131178342341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65589171165 + 65589171166.

It is an arithmetic number, because the mean of its divisors is an integer number (65589171166).

Almost surely, 2^131178342331 is an apocalyptic number.

131178342331 is a deficient number, since it is larger than the sum of its proper divisors (1).

131178342331 is an equidigital number, since it uses as much as digits as its factorization.

131178342331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The spelling of 131178342331 in words is "one hundred thirty-one billion, one hundred seventy-eight million, three hundred forty-two thousand, three hundred thirty-one".