316642261 has 8 divisors (see below), whose sum is σ = 345108960. Its totient is φ = 288762672.

The previous prime is 316642253. The next prime is 316642267. The reversal of 316642261 is 162246613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 316642261 - 2³ = 316642253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316642267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145651 + ... + 147808.

It is an arithmetic number, because the mean of its divisors is an integer number (43138620).

Almost surely, 2^316642261 is an apocalyptic number.

It is an amenable number.

316642261 is a deficient number, since it is larger than the sum of its proper divisors (28466699).

316642261 is a wasteful number, since it uses less digits than its factorization.

316642261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293555.

The product of its digits is 10368, while the sum is 31.

The square root of 316642261 is about 17794.4446668054. Note that the first 3 decimals coincide. The cubic root of 316642261 is about 681.5896065537.

Adding to 316642261 its reverse (162246613), we get a palindrome (478888874).

The spelling of 316642261 in words is "three hundred sixteen million, six hundred forty-two thousand, two hundred sixty-one".