163242331 has 16 divisors (see below), whose sum is σ = 189190144. Its totient is φ = 137964384.

The previous prime is 163242323. The next prime is 163242341. The reversal of 163242331 is 133242361.

It is a cyclic number.

It is not a de Polignac number, because 163242331 - 2³ = 163242323 is a prime.

It is a super-2 number, since 2×163242331² = 53296117260627122, 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 = 163242296 and 163242305.

It is not an unprimeable number, because it can be changed into a prime (163242341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268630 + ... + 269236.

It is an arithmetic number, because the mean of its divisors is an integer number (11824384).

Almost surely, 2^163242331 is an apocalyptic number.

163242331 is a deficient number, since it is larger than the sum of its proper divisors (25947813).

163242331 is a wasteful number, since it uses less digits than its factorization.

163242331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090.

The product of its digits is 2592, while the sum is 25.

The square root of 163242331 is about 12776.6322244948. The cubic root of 163242331 is about 546.5261279040.

Adding to 163242331 its reverse (133242361), we get a palindrome (296484692).

The spelling of 163242331 in words is "one hundred sixty-three million, two hundred forty-two thousand, three hundred thirty-one".