120531647 has 2 divisors, whose sum is σ = 120531648. Its totient is φ = 120531646.

The previous prime is 120531629. The next prime is 120531731. The reversal of 120531647 is 746135021.

It is a weak prime.

It is an emirp because it is prime and its reverse (746135021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120531647 - 2⁸ = 120531391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120531617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60265823 + 60265824.

It is an arithmetic number, because the mean of its divisors is an integer number (60265824).

Almost surely, 2^120531647 is an apocalyptic number.

120531647 is a deficient number, since it is larger than the sum of its proper divisors (1).

120531647 is an equidigital number, since it uses as much as digits as its factorization.

120531647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 120531647 is about 10978.6905867685. The cubic root of 120531647 is about 493.9697608070.

Adding to 120531647 its reverse (746135021), we get a palindrome (866666668).

The spelling of 120531647 in words is "one hundred twenty million, five hundred thirty-one thousand, six hundred forty-seven".