160397931 has 8 divisors (see below), whose sum is σ = 217488960. Its totient is φ = 105119432.

The previous prime is 160397921. The next prime is 160397971. The reversal of 160397931 is 139793061.

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 160397931 - 2¹¹ = 160395883 is a prime.

It is a super-2 number, since 2×160397931² = 51454992538161522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 160397931.

It is not an unprimeable number, because it can be changed into a prime (160397911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452925 + ... + 453278.

It is an arithmetic number, because the mean of its divisors is an integer number (27186120).

Almost surely, 2^160397931 is an apocalyptic number.

160397931 is a deficient number, since it is larger than the sum of its proper divisors (57091029).

160397931 is an equidigital number, since it uses as much as digits as its factorization.

160397931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906265.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 160397931 is about 12664.8304765599. The cubic root of 160397931 is about 543.3332136031. Note that the first 3 decimals are identical.

The spelling of 160397931 in words is "one hundred sixty million, three hundred ninety-seven thousand, nine hundred thirty-one".