105289631 has 2 divisors, whose sum is σ = 105289632. Its totient is φ = 105289630.

The previous prime is 105289627. The next prime is 105289643. The reversal of 105289631 is 136982501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105289631 - 2² = 105289627 is a prime.

It is a super-2 number, since 2×105289631² = 22171812792232322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105289591 and 105289600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105289651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52644815 + 52644816.

It is an arithmetic number, because the mean of its divisors is an integer number (52644816).

Almost surely, 2^105289631 is an apocalyptic number.

105289631 is a deficient number, since it is larger than the sum of its proper divisors (1).

105289631 is an equidigital number, since it uses as much as digits as its factorization.

105289631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 105289631 is about 10261.0735793093. The cubic root of 105289631 is about 472.2027745399.

The spelling of 105289631 in words is "one hundred five million, two hundred eighty-nine thousand, six hundred thirty-one".