131144031229 has 2 divisors, whose sum is σ = 131144031230. Its totient is φ = 131144031228.

The previous prime is 131144031191. The next prime is 131144031241. The reversal of 131144031229 is 922130441131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122675062500 + 8468968729 = 350250^2 + 92027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131144031229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131144031229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131144031289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65572015614 + 65572015615.

It is an arithmetic number, because the mean of its divisors is an integer number (65572015615).

Almost surely, 2^131144031229 is an apocalyptic number.

It is an amenable number.

131144031229 is a deficient number, since it is larger than the sum of its proper divisors (1).

131144031229 is an equidigital number, since it uses as much as digits as its factorization.

131144031229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 131144031229 in words is "one hundred thirty-one billion, one hundred forty-four million, thirty-one thousand, two hundred twenty-nine".