108631 has 2 divisors, whose sum is σ = 108632. Its totient is φ = 108630.

The previous prime is 108587. The next prime is 108637. The reversal of 108631 is 136801.

108631 is nontrivially palindromic in base 13.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108631 - 2⁷ = 108503 is a prime.

It is a super-2 number, since 2×108631² = 23601388322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 108599 and 108608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54315 + 54316.

It is an arithmetic number, because the mean of its divisors is an integer number (54316).

2¹⁰⁸⁶³¹ is an apocalyptic number.

108631 is a deficient number, since it is larger than the sum of its proper divisors (1).

108631 is an equidigital number, since it uses as much as digits as its factorization.

108631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 108631 is about 329.5921722371. The cubic root of 108631 is about 47.7145968949.

The spelling of 108631 in words is "one hundred eight thousand, six hundred thirty-one".