120531317 has 4 divisors (see below), whose sum is σ = 124419456. Its totient is φ = 116643180.

The previous prime is 120531289. The next prime is 120531331. The reversal of 120531317 is 713135021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120531317 - 2⁶ = 120531253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120531292 and 120531301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120531347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1944023 + ... + 1944084.

It is an arithmetic number, because the mean of its divisors is an integer number (31104864).

Almost surely, 2^120531317 is an apocalyptic number.

It is an amenable number.

120531317 is a deficient number, since it is larger than the sum of its proper divisors (3888139).

120531317 is an equidigital number, since it uses as much as digits as its factorization.

120531317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888138.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 120531317 is about 10978.6755576436. The cubic root of 120531317 is about 493.9693099982.

Adding to 120531317 its reverse (713135021), we get a palindrome (833666338).

The spelling of 120531317 in words is "one hundred twenty million, five hundred thirty-one thousand, three hundred seventeen".