3031020421 has 32 divisors (see below), whose sum is σ = 3654161280. Its totient is φ = 2477260800.

The previous prime is 3031020409. The next prime is 3031020439. The reversal of 3031020421 is 1240201303.

It is a happy number.

3031020421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3031020421 - 2¹¹ = 3031018373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3031020395 and 3031020404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031020121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3941125 + ... + 3941893.

It is an arithmetic number, because the mean of its divisors is an integer number (114192540).

Almost surely, 2^3031020421 is an apocalyptic number.

It is an amenable number.

3031020421 is a deficient number, since it is larger than the sum of its proper divisors (623140859).

3031020421 is a wasteful number, since it uses less digits than its factorization.

3031020421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477.

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

The square root of 3031020421 is about 55054.7038953076. The cubic root of 3031020421 is about 1447.2035553582.

Adding to 3031020421 its reverse (1240201303), we get a palindrome (4271221724).

The spelling of 3031020421 in words is "three billion, thirty-one million, twenty thousand, four hundred twenty-one".