163231655 has 16 divisors (see below), whose sum is σ = 202444704. Its totient is φ = 126268800.

The previous prime is 163231609. The next prime is 163231661. The reversal of 163231655 is 556132361.

It is not a de Polignac number, because 163231655 - 2⁶ = 163231591 is a prime.

It is a super-3 number, since 3×163231655³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17957 + ... + 25473.

It is an arithmetic number, because the mean of its divisors is an integer number (12652794).

Almost surely, 2^163231655 is an apocalyptic number.

163231655 is a deficient number, since it is larger than the sum of its proper divisors (39213049).

163231655 is a wasteful number, since it uses less digits than its factorization.

163231655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7666.

The product of its digits is 16200, while the sum is 32.

The square root of 163231655 is about 12776.2144236859. The cubic root of 163231655 is about 546.5142134287.

The spelling of 163231655 in words is "one hundred sixty-three million, two hundred thirty-one thousand, six hundred fifty-five".