163212631 has 4 divisors (see below), whose sum is σ = 172813392. Its totient is φ = 153611872.

The previous prime is 163212601. The next prime is 163212659. The reversal of 163212631 is 136212361.

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 163212631 - 2⁷ = 163212503 is a prime.

It is a super-2 number, since 2×163212631² = 53276725835884322, 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 = 163212596 and 163212605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163212601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4800355 + ... + 4800388.

It is an arithmetic number, because the mean of its divisors is an integer number (43203348).

Almost surely, 2^163212631 is an apocalyptic number.

163212631 is a deficient number, since it is larger than the sum of its proper divisors (9600761).

163212631 is an equidigital number, since it uses as much as digits as its factorization.

163212631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9600760.

The product of its digits is 1296, while the sum is 25.

The square root of 163212631 is about 12775.4698935108. The cubic root of 163212631 is about 546.4929812514.

Adding to 163212631 its reverse (136212361), we get a palindrome (299424992).

The spelling of 163212631 in words is "one hundred sixty-three million, two hundred twelve thousand, six hundred thirty-one".