104781013 has 4 divisors (see below), whose sum is σ = 110944620. Its totient is φ = 98617408.

The previous prime is 104781007. The next prime is 104781037. The reversal of 104781013 is 310187401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34187409 + 70593604 = 5847^2 + 8402^2 .

It is a de Polignac number, because none of the positive numbers 2^k-104781013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104781043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3081778 + ... + 3081811.

It is an arithmetic number, because the mean of its divisors is an integer number (27736155).

Almost surely, 2^104781013 is an apocalyptic number.

It is an amenable number.

104781013 is a deficient number, since it is larger than the sum of its proper divisors (6163607).

104781013 is an equidigital number, since it uses as much as digits as its factorization.

104781013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6163606.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 104781013 is about 10236.2597172991. The cubic root of 104781013 is about 471.4411971738.

The spelling of 104781013 in words is "one hundred four million, seven hundred eighty-one thousand, thirteen".