317720132 has 6 divisors (see below), whose sum is σ = 556010238. Its totient is φ = 158860064.

The previous prime is 317720131. The next prime is 317720149. The reversal of 317720132 is 231027713.

It can be written as a sum of positive squares in only one way, i.e., 264517696 + 53202436 = 16264^2 + 7294^2 .

It is not an unprimeable number, because it can be changed into a prime (317720131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39715013 + ... + 39715020.

It is an arithmetic number, because the mean of its divisors is an integer number (92668373).

Almost surely, 2^317720132 is an apocalyptic number.

It is an amenable number.

317720132 is a deficient number, since it is larger than the sum of its proper divisors (238290106).

317720132 is a wasteful number, since it uses less digits than its factorization.

317720132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79430037 (or 79430035 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 317720132 is about 17824.7056637690. The cubic root of 317720132 is about 682.3621225415.

Adding to 317720132 its reverse (231027713), we get a palindrome (548747845).

The spelling of 317720132 in words is "three hundred seventeen million, seven hundred twenty thousand, one hundred thirty-two".