161010971 has 8 divisors (see below), whose sum is σ = 183285504. Its totient is φ = 140009320.

The previous prime is 161010943. The next prime is 161010973. The reversal of 161010971 is 179010161.

161010971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161010971 - 2⁶ = 161010907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161010971.

It is not an unprimeable number, because it can be changed into a prime (161010973) 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, 317951 + ... + 318456.

It is an arithmetic number, because the mean of its divisors is an integer number (22910688).

Almost surely, 2^161010971 is an apocalyptic number.

161010971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

161010971 is a deficient number, since it is larger than the sum of its proper divisors (22274533).

161010971 is a wasteful number, since it uses less digits than its factorization.

161010971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636441.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 161010971 is about 12689.0098510483. The cubic root of 161010971 is about 544.0245391090.

The spelling of 161010971 in words is "one hundred sixty-one million, ten thousand, nine hundred seventy-one".