160321631 has 4 divisors (see below), whose sum is σ = 161820072. Its totient is φ = 158823192.

The previous prime is 160321607. The next prime is 160321691. The reversal of 160321631 is 136123061.

It is a happy number.

160321631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136123061 = 739 ⋅184199.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160321631 is a prime.

It is a super-2 number, since 2×160321631² = 51406050733000322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 160321597 and 160321606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160321691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749060 + ... + 749273.

It is an arithmetic number, because the mean of its divisors is an integer number (40455018).

Almost surely, 2^160321631 is an apocalyptic number.

160321631 is a deficient number, since it is larger than the sum of its proper divisors (1498441).

160321631 is a wasteful number, since it uses less digits than its factorization.

160321631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498440.

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

The square root of 160321631 is about 12661.8178394731. The cubic root of 160321631 is about 543.2470468653.

Adding to 160321631 its reverse (136123061), we get a palindrome (296444692).

The spelling of 160321631 in words is "one hundred sixty million, three hundred twenty-one thousand, six hundred thirty-one".