10391903423 has 4 divisors (see below), whose sum is σ = 11336621928. Its totient is φ = 9447184920.

The previous prime is 10391903407. The next prime is 10391903437. The reversal of 10391903423 is 32430919301.

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 10391903423 - 2⁴ = 10391903407 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 (10391906423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472359236 + ... + 472359257.

It is an arithmetic number, because the mean of its divisors is an integer number (2834155482).

Almost surely, 2^10391903423 is an apocalyptic number.

10391903423 is a deficient number, since it is larger than the sum of its proper divisors (944718505).

10391903423 is an equidigital number, since it uses as much as digits as its factorization.

10391903423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944718504.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 10391903423 in words is "ten billion, three hundred ninety-one million, nine hundred three thousand, four hundred twenty-three".