163880331 has 4 divisors (see below), whose sum is σ = 218507112. Its totient is φ = 109253552.

The previous prime is 163880329. The next prime is 163880341. The reversal of 163880331 is 133088361.

It is a happy number.

163880331 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.

It is a cyclic number.

It is not a de Polignac number, because 163880331 - 2¹ = 163880329 is a prime.

It is a super-2 number, since 2×163880331² = 53713525777339122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163880292 and 163880301.

It is not an unprimeable number, because it can be changed into a prime (163880341) 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, 27313386 + ... + 27313391.

It is an arithmetic number, because the mean of its divisors is an integer number (54626778).

Almost surely, 2^163880331 is an apocalyptic number.

163880331 is a deficient number, since it is larger than the sum of its proper divisors (54626781).

163880331 is an equidigital number, since it uses as much as digits as its factorization.

163880331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54626780.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 163880331 is about 12801.5753327471. The cubic root of 163880331 is about 547.2371983674.

The spelling of 163880331 in words is "one hundred sixty-three million, eight hundred eighty thousand, three hundred thirty-one".