2031003421 has 2 divisors, whose sum is σ = 2031003422. Its totient is φ = 2031003420.

The previous prime is 2031003389. The next prime is 2031003427. The reversal of 2031003421 is 1243001302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1954877796 + 76125625 = 44214^2 + 8725^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031003421 - 2⁵ = 2031003389 is a prime.

It is a super-2 number, since 2×2031003421² = 8249949792227406482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2031003395 and 2031003404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031003427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015501710 + 1015501711.

It is an arithmetic number, because the mean of its divisors is an integer number (1015501711).

Almost surely, 2^2031003421 is an apocalyptic number.

It is an amenable number.

2031003421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031003421 is an equidigital number, since it uses as much as digits as its factorization.

2031003421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2031003421 is about 45066.6553118822. The cubic root of 2031003421 is about 1266.3980067871.

Adding to 2031003421 its reverse (1243001302), we get a palindrome (3274004723).

The spelling of 2031003421 in words is "two billion, thirty-one million, three thousand, four hundred twenty-one".