3131303020 has 24 divisors (see below), whose sum is σ = 6649624800. Its totient is φ = 1238447232.

The previous prime is 3131303003. The next prime is 3131303107. The reversal of 3131303020 is 203031313.

It is a super-2 number, since 2×3131303020² = 19610117206122240800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3131302985 and 3131303003.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 877800 + ... + 881359.

It is an arithmetic number, because the mean of its divisors is an integer number (277067700).

Almost surely, 2^3131303020 is an apocalyptic number.

It is an amenable number.

3131303020 is an abundant number, since it is smaller than the sum of its proper divisors (3518321780).

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

3131303020 is a wasteful number, since it uses less digits than its factorization.

3131303020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759257 (or 1759255 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 3131303020 is about 55958.0469637746. The cubic root of 3131303020 is about 1462.9911499148.

Adding to 3131303020 its reverse (203031313), we get a palindrome (3334334333).

The spelling of 3131303020 in words is "three billion, one hundred thirty-one million, three hundred three thousand, twenty".