131123387 has 2 divisors, whose sum is σ = 131123388. Its totient is φ = 131123386.

The previous prime is 131123359. The next prime is 131123393. The reversal of 131123387 is 783321131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131123387 - 2⁶ = 131123323 is a prime.

It is not a weakly prime, because it can be changed into another prime (131123327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561693 + 65561694.

It is an arithmetic number, because the mean of its divisors is an integer number (65561694).

Almost surely, 2^131123387 is an apocalyptic number.

131123387 is a deficient number, since it is larger than the sum of its proper divisors (1).

131123387 is an equidigital number, since it uses as much as digits as its factorization.

131123387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 131123387 is about 11450.9120597444. The cubic root of 131123387 is about 508.0347112392.

The spelling of 131123387 in words is "one hundred thirty-one million, one hundred twenty-three thousand, three hundred eighty-seven".