10003523421 has 8 divisors (see below), whose sum is σ = 13341301600. Its totient is φ = 6667380432.

The previous prime is 10003523399. The next prime is 10003523443. The reversal of 10003523421 is 12432530001.

It is an interprime number because it is at equal distance from previous prime (10003523399) and next prime (10003523443).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10003523421 - 2⁹ = 10003522909 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 (10003523221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394450 + ... + 419043.

It is an arithmetic number, because the mean of its divisors is an integer number (1667662700).

Almost surely, 2^10003523421 is an apocalyptic number.

It is an amenable number.

10003523421 is a deficient number, since it is larger than the sum of its proper divisors (3337778179).

10003523421 is an equidigital number, since it uses as much as digits as its factorization.

10003523421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817595.

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 10003523421 in words is "ten billion, three million, five hundred twenty-three thousand, four hundred twenty-one".