131055649 has 2 divisors, whose sum is σ = 131055650. Its totient is φ = 131055648.

The previous prime is 131055647. The next prime is 131055653. The reversal of 131055649 is 946550131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130302225 + 753424 = 11415^2 + 868^2 .

It is a cyclic number.

It is not a de Polignac number, because 131055649 - 2¹ = 131055647 is a prime.

It is a super-2 number, since 2×131055649² = 34351166269622402, which contains 22 as substring.

Together with 131055647, it forms a pair of twin primes.

It is equal to p_7434718 and since 131055649 and 7434718 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (131055641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65527824 + 65527825.

It is an arithmetic number, because the mean of its divisors is an integer number (65527825).

Almost surely, 2^131055649 is an apocalyptic number.

It is an amenable number.

131055649 is a deficient number, since it is larger than the sum of its proper divisors (1).

131055649 is an equidigital number, since it uses as much as digits as its factorization.

131055649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 131055649 is about 11447.9539219897. The cubic root of 131055649 is about 507.9472130345.

The spelling of 131055649 in words is "one hundred thirty-one million, fifty-five thousand, six hundred forty-nine".