131344069 has 2 divisors, whose sum is σ = 131344070. Its totient is φ = 131344068.

The previous prime is 131344067. The next prime is 131344079. The reversal of 131344069 is 960443131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88924900 + 42419169 = 9430^2 + 6513^2 .

It is a cyclic number.

It is not a de Polignac number, because 131344069 - 2¹ = 131344067 is a prime.

It is a super-2 number, since 2×131344069² = 34502528922953522, which contains 22 as substring.

Together with 131344067, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131344069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131344061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65672034 + 65672035.

It is an arithmetic number, because the mean of its divisors is an integer number (65672035).

Almost surely, 2^131344069 is an apocalyptic number.

It is an amenable number.

131344069 is a deficient number, since it is larger than the sum of its proper divisors (1).

131344069 is an equidigital number, since it uses as much as digits as its factorization.

131344069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 131344069 is about 11460.5440097755. The cubic root of 131344069 is about 508.3195607006.

The spelling of 131344069 in words is "one hundred thirty-one million, three hundred forty-four thousand, sixty-nine".