3181970020 has 24 divisors (see below), whose sum is σ = 6683355000. Its totient is φ = 1272556032.

The previous prime is 3181969997. The next prime is 3181970027. The reversal of 3181970020 is 200791813.

It can be written as a sum of positive squares in 4 ways, for example, as 381655296 + 2800314724 = 19536^2 + 52918^2 .

It is not an unprimeable number, because it can be changed into a prime (3181970027) 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, 136156 + ... + 157804.

It is an arithmetic number, because the mean of its divisors is an integer number (278473125).

Almost surely, 2^3181970020 is an apocalyptic number.

It is an amenable number.

3181970020 is an abundant number, since it is smaller than the sum of its proper divisors (3501384980).

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

3181970020 is a wasteful number, since it uses less digits than its factorization.

3181970020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29007 (or 29005 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 3181970020 is about 56408.9533673512. The cubic root of 3181970020 is about 1470.8397595898.

The spelling of 3181970020 in words is "three billion, one hundred eighty-one million, nine hundred seventy thousand, twenty".