106561331 has 2 divisors, whose sum is σ = 106561332. Its totient is φ = 106561330.

The previous prime is 106561319. The next prime is 106561349. The reversal of 106561331 is 133165601.

It is a weak prime.

It is an emirp because it is prime and its reverse (133165601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106561331 - 2²⁶ = 39452467 is a prime.

It is a super-2 number, since 2×106561331² = 22710634528983122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 106561331.

It is not a weakly prime, because it can be changed into another prime (106561381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53280665 + 53280666.

It is an arithmetic number, because the mean of its divisors is an integer number (53280666).

Almost surely, 2^106561331 is an apocalyptic number.

106561331 is a deficient number, since it is larger than the sum of its proper divisors (1).

106561331 is an equidigital number, since it uses as much as digits as its factorization.

106561331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 106561331 is about 10322.8547892528. The cubic root of 106561331 is about 474.0962776295.

The spelling of 106561331 in words is "one hundred six million, five hundred sixty-one thousand, three hundred thirty-one".