316001661 has 16 divisors (see below), whose sum is σ = 461505600. Its totient is φ = 191437568.

The previous prime is 316001639. The next prime is 316001663. The reversal of 316001661 is 166100613.

It is a cyclic number.

It is not a de Polignac number, because 316001661 - 2¹⁷ = 315870589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316001663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105351 + ... + 108308.

It is an arithmetic number, because the mean of its divisors is an integer number (28844100).

Almost surely, 2^316001661 is an apocalyptic number.

It is an amenable number.

316001661 is a deficient number, since it is larger than the sum of its proper divisors (145503939).

316001661 is a wasteful number, since it uses less digits than its factorization.

316001661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213708.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 316001661 is about 17776.4355538449. The cubic root of 316001661 is about 681.1296541786.

The spelling of 316001661 in words is "three hundred sixteen million, one thousand, six hundred sixty-one".