163000631 has 2 divisors, whose sum is σ = 163000632. Its totient is φ = 163000630.

The previous prime is 163000589. The next prime is 163000661. The reversal of 163000631 is 136000361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163000631 - 2¹⁴ = 162984247 is a prime.

It is a super-2 number, since 2×163000631² = 53138411412796322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163000661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81500315 + 81500316.

It is an arithmetic number, because the mean of its divisors is an integer number (81500316).

Almost surely, 2^163000631 is an apocalyptic number.

163000631 is a deficient number, since it is larger than the sum of its proper divisors (1).

163000631 is an equidigital number, since it uses as much as digits as its factorization.

163000631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 163000631 is about 12767.1700466470. The cubic root of 163000631 is about 546.2562620091.

Adding to 163000631 its reverse (136000361), we get a palindrome (299000992).

The spelling of 163000631 in words is "one hundred sixty-three million, six hundred thirty-one", and thus it is an aban number.