316621161481 has 3 divisors (see below), whose sum is σ = 316621724173. Its totient is φ = 316620598790.

The previous prime is 316621161449. The next prime is 316621161541. The reversal of 316621161481 is 184161126613.

The square root of 316621161481 is 562691.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 316621161481 - 2⁵ = 316621161449 is a prime.

It is a super-2 number, since 2×316621161481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316621161781) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 281346 + ... + 844036.

Almost surely, 2^316621161481 is an apocalyptic number.

316621161481 is the 562691-st square number.

316621161481 is the 281346-th centered octagonal number.

It is an amenable number.

316621161481 is a deficient number, since it is larger than the sum of its proper divisors (562692).

316621161481 is an frugal number, since it uses more digits than its factorization.

316621161481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125382 (or 562691 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The spelling of 316621161481 in words is "three hundred sixteen billion, six hundred twenty-one million, one hundred sixty-one thousand, four hundred eighty-one".