131235077 has 2 divisors, whose sum is σ = 131235078. Its totient is φ = 131235076.

The previous prime is 131235029. The next prime is 131235089. The reversal of 131235077 is 770532131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129026881 + 2208196 = 11359^2 + 1486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131235077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131235007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65617538 + 65617539.

It is an arithmetic number, because the mean of its divisors is an integer number (65617539).

Almost surely, 2^131235077 is an apocalyptic number.

It is an amenable number.

131235077 is a deficient number, since it is larger than the sum of its proper divisors (1).

131235077 is an equidigital number, since it uses as much as digits as its factorization.

131235077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 131235077 is about 11455.7879257605. The cubic root of 131235077 is about 508.1789171278.

The spelling of 131235077 in words is "one hundred thirty-one million, two hundred thirty-five thousand, seventy-seven".