3220020031 has 4 divisors (see below), whose sum is σ = 3409432992. Its totient is φ = 3030607072.

The previous prime is 3220020007. The next prime is 3220020073. The reversal of 3220020031 is 1300200223.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3220020031 - 2³¹ = 1072536383 is a prime.

It is a super-2 number, since 2×3220020031² = 20737058000082481922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3220019993 and 3220020020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220020091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94706455 + ... + 94706488.

It is an arithmetic number, because the mean of its divisors is an integer number (852358248).

Almost surely, 2^3220020031 is an apocalyptic number.

3220020031 is a deficient number, since it is larger than the sum of its proper divisors (189412961).

3220020031 is a wasteful number, since it uses less digits than its factorization.

3220020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189412960.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3220020031 is about 56745.2203361658. The cubic root of 3220020031 is about 1476.6793139660.

Adding to 3220020031 its reverse (1300200223), we get a palindrome (4520220254).

The spelling of 3220020031 in words is "three billion, two hundred twenty million, twenty thousand, thirty-one".