160971031 has 4 divisors (see below), whose sum is σ = 173353432. Its totient is φ = 148588632.

The previous prime is 160971029. The next prime is 160971049. The reversal of 160971031 is 130179061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130179061 = 37 ⋅3518353.

It is a cyclic number.

It is not a de Polignac number, because 160971031 - 2¹ = 160971029 is a prime.

It is a super-2 number, since 2×160971031² = 51823345642405922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160971731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6191181 + ... + 6191206.

It is an arithmetic number, because the mean of its divisors is an integer number (43338358).

Almost surely, 2^160971031 is an apocalyptic number.

160971031 is a deficient number, since it is larger than the sum of its proper divisors (12382401).

160971031 is a wasteful number, since it uses less digits than its factorization.

160971031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12382400.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 160971031 is about 12687.4359505772. The cubic root of 160971031 is about 543.9795522429.

The spelling of 160971031 in words is "one hundred sixty million, nine hundred seventy-one thousand, thirty-one".