3100020321 has 32 divisors (see below), whose sum is σ = 4310841600. Its totient is φ = 1979873280.

The previous prime is 3100020283. The next prime is 3100020323. The reversal of 3100020321 is 1230200013.

It is a happy number.

It is not a de Polignac number, because 3100020321 - 2⁶ = 3100020257 is a prime.

It is a super-2 number, since 2×3100020321² = 19220251981225886082, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3100020297 and 3100020306.

It is not an unprimeable number, because it can be changed into a prime (3100020323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3071865 + ... + 3072873.

It is an arithmetic number, because the mean of its divisors is an integer number (134713800).

Almost surely, 2^3100020321 is an apocalyptic number.

It is an amenable number.

3100020321 is a deficient number, since it is larger than the sum of its proper divisors (1210821279).

3100020321 is a wasteful number, since it uses less digits than its factorization.

3100020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 3100020321 is about 55677.8261159683. The cubic root of 3100020321 is about 1458.1029218461.

Adding to 3100020321 its reverse (1230200013), we get a palindrome (4330220334).

The spelling of 3100020321 in words is "three billion, one hundred million, twenty thousand, three hundred twenty-one".