317261547956 has 6 divisors (see below), whose sum is σ = 555207708930. Its totient is φ = 158630773976.

The previous prime is 317261547851. The next prime is 317261547959. The reversal of 317261547956 is 659745162713.

It can be written as a sum of positive squares in only one way, i.e., 258149351056 + 59112196900 = 508084^2 + 243130^2 .

It is a super-2 number, since 2×317261547956² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317261547959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39657693491 + ... + 39657693498.

It is an arithmetic number, because the mean of its divisors is an integer number (92534618155).

Almost surely, 2^317261547956 is an apocalyptic number.

It is an amenable number.

317261547956 is a deficient number, since it is larger than the sum of its proper divisors (237946160974).

317261547956 is a wasteful number, since it uses less digits than its factorization.

317261547956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79315386993 (or 79315386991 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 56.

The spelling of 317261547956 in words is "three hundred seventeen billion, two hundred sixty-one million, five hundred forty-seven thousand, nine hundred fifty-six".