131123347 has 2 divisors, whose sum is σ = 131123348. Its totient is φ = 131123346.

The previous prime is 131123341. The next prime is 131123359. The reversal of 131123347 is 743321131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131123347 - 2¹⁹ = 130599059 is a prime.

It is not a weakly prime, because it can be changed into another prime (131123341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561673 + 65561674.

It is an arithmetic number, because the mean of its divisors is an integer number (65561674).

Almost surely, 2^131123347 is an apocalyptic number.

131123347 is a deficient number, since it is larger than the sum of its proper divisors (1).

131123347 is an equidigital number, since it uses as much as digits as its factorization.

131123347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 25.

The square root of 131123347 is about 11450.9103131585. The cubic root of 131123347 is about 508.0346595795.

Adding to 131123347 its reverse (743321131), we get a palindrome (874444478).

The spelling of 131123347 in words is "one hundred thirty-one million, one hundred twenty-three thousand, three hundred forty-seven".