131164123 has 2 divisors, whose sum is σ = 131164124. Its totient is φ = 131164122.

The previous prime is 131164109. The next prime is 131164157. The reversal of 131164123 is 321461131.

It is a weak prime.

It is an emirp because it is prime and its reverse (321461131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131164123 - 2⁹ = 131163611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131164094 and 131164103.

It is not a weakly prime, because it can be changed into another prime (131164183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65582061 + 65582062.

It is an arithmetic number, because the mean of its divisors is an integer number (65582062).

Almost surely, 2^131164123 is an apocalyptic number.

131164123 is a deficient number, since it is larger than the sum of its proper divisors (1).

131164123 is an equidigital number, since it uses as much as digits as its factorization.

131164123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 131164123 is about 11452.6906445603. The cubic root of 131164123 is about 508.0873160407.

The spelling of 131164123 in words is "one hundred thirty-one million, one hundred sixty-four thousand, one hundred twenty-three".