131623147 has 2 divisors, whose sum is σ = 131623148. Its totient is φ = 131623146.

The previous prime is 131623109. The next prime is 131623157. The reversal of 131623147 is 741326131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131623147 is a prime.

It is not a weakly prime, because it can be changed into another prime (131623157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65811573 + 65811574.

It is an arithmetic number, because the mean of its divisors is an integer number (65811574).

Almost surely, 2^131623147 is an apocalyptic number.

131623147 is a deficient number, since it is larger than the sum of its proper divisors (1).

131623147 is an equidigital number, since it uses as much as digits as its factorization.

131623147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 131623147 is about 11472.7131490332. The cubic root of 131623147 is about 508.6793293888.

Adding to 131623147 its reverse (741326131), we get a palindrome (872949278).

The spelling of 131623147 in words is "one hundred thirty-one million, six hundred twenty-three thousand, one hundred forty-seven".