104072831 has 4 divisors (see below), whose sum is σ = 104109672. Its totient is φ = 104035992.

The previous prime is 104072807. The next prime is 104072833. The reversal of 104072831 is 138270401.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104072831 is a prime.

It is a super-2 number, since 2×104072831² = 21662308304709122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104072831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104072833) 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, 13796 + ... + 19961.

It is an arithmetic number, because the mean of its divisors is an integer number (26027418).

Almost surely, 2^104072831 is an apocalyptic number.

104072831 is a deficient number, since it is larger than the sum of its proper divisors (36841).

104072831 is an equidigital number, since it uses as much as digits as its factorization.

104072831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36840.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 104072831 is about 10201.6092358020. The cubic root of 104072831 is about 470.3766876062.

The spelling of 104072831 in words is "one hundred four million, seventy-two thousand, eight hundred thirty-one".