160731157 has 8 divisors (see below), whose sum is σ = 163964952. Its totient is φ = 157516800.

The previous prime is 160731143. The next prime is 160731167. The reversal of 160731157 is 751137061.

It can be written as a sum of positive squares in 4 ways, for example, as 303601 + 160427556 = 551^2 + 12666^2 .

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 160731157 - 2¹⁹ = 160206869 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 (160731167) 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, 12453 + ... + 21829.

It is an arithmetic number, because the mean of its divisors is an integer number (20495619).

Almost surely, 2^160731157 is an apocalyptic number.

It is an amenable number.

160731157 is a deficient number, since it is larger than the sum of its proper divisors (3233795).

160731157 is an equidigital number, since it uses as much as digits as its factorization.

160731157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 160731157 is about 12677.9792159476. The cubic root of 160731157 is about 543.7092108039.

The spelling of 160731157 in words is "one hundred sixty million, seven hundred thirty-one thousand, one hundred fifty-seven".