104931643 has 2 divisors, whose sum is σ = 104931644. Its totient is φ = 104931642.

The previous prime is 104931571. The next prime is 104931649. The reversal of 104931643 is 346139401.

It is a strong prime.

It is an emirp because it is prime and its reverse (346139401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104931643 is a prime.

It is a super-2 number, since 2×104931643² = 22021299405358898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (104931649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52465821 + 52465822.

It is an arithmetic number, because the mean of its divisors is an integer number (52465822).

Almost surely, 2^104931643 is an apocalyptic number.

104931643 is a deficient number, since it is larger than the sum of its proper divisors (1).

104931643 is an equidigital number, since it uses as much as digits as its factorization.

104931643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 104931643 is about 10243.6147428532. The cubic root of 104931643 is about 471.6669988524. Note that the first 3 decimals are identical.

The spelling of 104931643 in words is "one hundred four million, nine hundred thirty-one thousand, six hundred forty-three".