104997731 has 4 divisors (see below), whose sum is σ = 105034872. Its totient is φ = 104960592.

The previous prime is 104997707. The next prime is 104997733. The reversal of 104997731 is 137799401.

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

It is a cyclic number.

It is not a de Polignac number, because 104997731 - 2¹⁰ = 104996707 is a prime.

It is a super-2 number, since 2×104997731² = 22049047030296722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104997733) 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 in 3 ways as a sum of consecutive naturals, for example, 13946 + ... + 20111.

It is an arithmetic number, because the mean of its divisors is an integer number (26258718).

Almost surely, 2^104997731 is an apocalyptic number.

104997731 is a deficient number, since it is larger than the sum of its proper divisors (37141).

104997731 is an equidigital number, since it uses as much as digits as its factorization.

104997731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37140.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 104997731 is about 10246.8400494982. The cubic root of 104997731 is about 471.7659997698.

The spelling of 104997731 in words is "one hundred four million, nine hundred ninety-seven thousand, seven hundred thirty-one".