131087123 has 2 divisors, whose sum is σ = 131087124. Its totient is φ = 131087122.

The previous prime is 131087107. The next prime is 131087171. The reversal of 131087123 is 321780131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131087123 - 2⁴ = 131087107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131087092 and 131087101.

It is not a weakly prime, because it can be changed into another prime (131087923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65543561 + 65543562.

It is an arithmetic number, because the mean of its divisors is an integer number (65543562).

Almost surely, 2^131087123 is an apocalyptic number.

131087123 is a deficient number, since it is larger than the sum of its proper divisors (1).

131087123 is an equidigital number, since it uses as much as digits as its factorization.

131087123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 131087123 is about 11449.3284955931. The cubic root of 131087123 is about 507.9878722279.

The spelling of 131087123 in words is "one hundred thirty-one million, eighty-seven thousand, one hundred twenty-three".