131121123277 has 2 divisors, whose sum is σ = 131121123278. Its totient is φ = 131121123276.

The previous prime is 131121123191. The next prime is 131121123293. The reversal of 131121123277 is 772321121131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124260480036 + 6860643241 = 352506^2 + 82829^2 .

It is a cyclic number.

It is not a de Polignac number, because 131121123277 - 2¹⁹ = 131120598989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131121129277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65560561638 + 65560561639.

It is an arithmetic number, because the mean of its divisors is an integer number (65560561639).

Almost surely, 2^131121123277 is an apocalyptic number.

It is an amenable number.

131121123277 is a deficient number, since it is larger than the sum of its proper divisors (1).

131121123277 is an equidigital number, since it uses as much as digits as its factorization.

131121123277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 31.

The spelling of 131121123277 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred seventy-seven".