1003031421 has 48 divisors (see below), whose sum is σ = 1605014208. Its totient is φ = 555206400.

The previous prime is 1003031401. The next prime is 1003031431. The reversal of 1003031421 is 1241303001.

It is not a de Polignac number, because 1003031421 - 2⁹ = 1003030909 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1003031421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003031401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 981891 + ... + 982911.

It is an arithmetic number, because the mean of its divisors is an integer number (33437796).

Almost surely, 2^1003031421 is an apocalyptic number.

It is an amenable number.

1003031421 is a deficient number, since it is larger than the sum of its proper divisors (601982787).

1003031421 is a wasteful number, since it uses less digits than its factorization.

1003031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1003031421 is about 31670.6713064311. The cubic root of 1003031421 is about 1001.0094543258.

Adding to 1003031421 its reverse (1241303001), we get a palindrome (2244334422).

The spelling of 1003031421 in words is "one billion, three million, thirty-one thousand, four hundred twenty-one".