131155434349 has 2 divisors, whose sum is σ = 131155434350. Its totient is φ = 131155434348.

The previous prime is 131155434337. The next prime is 131155434407. The reversal of 131155434349 is 943434551131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84691476324 + 46463958025 = 291018^2 + 215555^2 .

It is a cyclic number.

It is not a de Polignac number, because 131155434349 - 2¹¹ = 131155432301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131155434329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65577717174 + 65577717175.

It is an arithmetic number, because the mean of its divisors is an integer number (65577717175).

Almost surely, 2^131155434349 is an apocalyptic number.

It is an amenable number.

131155434349 is a deficient number, since it is larger than the sum of its proper divisors (1).

131155434349 is an equidigital number, since it uses as much as digits as its factorization.

131155434349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 43.

It can be divided in two parts, 131155 and 434349, that added together give a square (565504 = 752²).

The spelling of 131155434349 in words is "one hundred thirty-one billion, one hundred fifty-five million, four hundred thirty-four thousand, three hundred forty-nine".