105986431 has 2 divisors, whose sum is σ = 105986432. Its totient is φ = 105986430.

The previous prime is 105986423. The next prime is 105986501. The reversal of 105986431 is 134689501.

It is a weak prime.

It is an emirp because it is prime and its reverse (134689501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105986431 - 2³ = 105986423 is a prime.

It is a super-2 number, since 2×105986431² = 22466247112235522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105986131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52993215 + 52993216.

It is an arithmetic number, because the mean of its divisors is an integer number (52993216).

Almost surely, 2^105986431 is an apocalyptic number.

105986431 is a deficient number, since it is larger than the sum of its proper divisors (1).

105986431 is an equidigital number, since it uses as much as digits as its factorization.

105986431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 105986431 is about 10294.9711510038. The cubic root of 105986431 is about 473.2421542395.

The spelling of 105986431 in words is "one hundred five million, nine hundred eighty-six thousand, four hundred thirty-one".