3031001020 has 24 divisors (see below), whose sum is σ = 6367806144. Its totient is φ = 1211885376.

The previous prime is 3031001003. The next prime is 3031001021. The reversal of 3031001020 is 201001303.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 3031000988 and 3031001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031001021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17974 + ... + 79906.

It is an arithmetic number, because the mean of its divisors is an integer number (265325256).

Almost surely, 2^3031001020 is an apocalyptic number.

It is an amenable number.

3031001020 is an abundant number, since it is smaller than the sum of its proper divisors (3336805124).

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

3031001020 is a wasteful number, since it uses less digits than its factorization.

3031001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64389 (or 64387 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 3031001020 is about 55054.5276975473. The cubic root of 3031001020 is about 1447.2004675911.

Adding to 3031001020 its reverse (201001303), we get a palindrome (3232002323).

The spelling of 3031001020 in words is "three billion, thirty-one million, one thousand, twenty".