106531 has 2 divisors, whose sum is σ = 106532. Its totient is φ = 106530.

The previous prime is 106501. The next prime is 106537. The reversal of 106531 is 135601.

It is a strong prime.

It is an emirp because it is prime and its reverse (135601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106531 - 2⁹ = 106019 is a prime.

It is a super-2 number, since 2×106531² = 22697707922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53265 + 53266.

It is an arithmetic number, because the mean of its divisors is an integer number (53266).

2¹⁰⁶⁵³¹ is an apocalyptic number.

106531 is a deficient number, since it is larger than the sum of its proper divisors (1).

106531 is an equidigital number, since it uses as much as digits as its factorization.

106531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 106531 is about 326.3908699703. The cubic root of 106531 is about 47.4051292022.

The spelling of 106531 in words is "one hundred six thousand, five hundred thirty-one".