160631231 has 2 divisors, whose sum is σ = 160631232. Its totient is φ = 160631230.

The previous prime is 160631197. The next prime is 160631291. The reversal of 160631231 is 132136061.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 160631231 - 2⁶ = 160631167 is a prime.

It is a super-2 number, since 2×160631231² = 51604784745150722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 160631197 and 160631206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160631291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80315615 + 80315616.

It is an arithmetic number, because the mean of its divisors is an integer number (80315616).

Almost surely, 2^160631231 is an apocalyptic number.

160631231 is a deficient number, since it is larger than the sum of its proper divisors (1).

160631231 is an equidigital number, since it uses as much as digits as its factorization.

160631231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 160631231 is about 12674.0376755003. The cubic root of 160631231 is about 543.5965134058.

Adding to 160631231 its reverse (132136061), we get a palindrome (292767292).

The spelling of 160631231 in words is "one hundred sixty million, six hundred thirty-one thousand, two hundred thirty-one".