3251020421 has 32 divisors (see below), whose sum is σ = 3701376000. Its totient is φ = 2829760000.

The previous prime is 3251020373. The next prime is 3251020433. The reversal of 3251020421 is 1240201523.

It is a cyclic number.

It is not a de Polignac number, because 3251020421 - 2¹⁰ = 3251019397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3251020393 and 3251020402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3251020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6786860 + ... + 6787338.

It is an arithmetic number, because the mean of its divisors is an integer number (115668000).

Almost surely, 2^3251020421 is an apocalyptic number.

It is an amenable number.

3251020421 is a deficient number, since it is larger than the sum of its proper divisors (450355579).

3251020421 is a wasteful number, since it uses less digits than its factorization.

3251020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 3251020421 is about 57017.7202367825. The cubic root of 3251020421 is about 1481.4030432741.

Adding to 3251020421 its reverse (1240201523), we get a palindrome (4491221944).

The spelling of 3251020421 in words is "three billion, two hundred fifty-one million, twenty thousand, four hundred twenty-one".