3031421020 has 12 divisors (see below), whose sum is σ = 6365984184. Its totient is φ = 1212568400.

The previous prime is 3031421017. The next prime is 3031421021. The reversal of 3031421020 is 201241303.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3031420985 and 3031421003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031421021) 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 in 3 ways as a sum of consecutive naturals, for example, 75785506 + ... + 75785545.

It is an arithmetic number, because the mean of its divisors is an integer number (530498682).

Almost surely, 2^3031421020 is an apocalyptic number.

It is an amenable number.

3031421020 is an abundant number, since it is smaller than the sum of its proper divisors (3334563164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3031421020 is a wasteful number, since it uses less digits than its factorization.

3031421020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151571060 (or 151571058 counting only the distinct ones).

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

The square root of 3031421020 is about 55058.3419655914. The cubic root of 3031421020 is about 1447.2673097684.

Adding to 3031421020 its reverse (201241303), we get a palindrome (3232662323).

The spelling of 3031421020 in words is "three billion, thirty-one million, four hundred twenty-one thousand, twenty".