3100020120 has 128 divisors (see below), whose sum is σ = 10458201600. Its totient is φ = 816688512.

The previous prime is 3100020083. The next prime is 3100020137. The reversal of 3100020120 is 210200013.

It is a happy number.

It is a super-2 number, since 2×3100020120² = 19220249488809628800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72349 + ... + 106931.

It is an arithmetic number, because the mean of its divisors is an integer number (81704700).

Almost surely, 2^3100020120 is an apocalyptic number.

3100020120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3100020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5229100800).

3100020120 is an abundant number, since it is smaller than the sum of its proper divisors (7358181480).

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

3100020120 is a wasteful number, since it uses less digits than its factorization.

3100020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34686 (or 34676 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 3100020120 is about 55677.8243109409. The cubic root of 3100020120 is about 1458.1028903324.

Adding to 3100020120 its reverse (210200013), we get a palindrome (3310220133).

The spelling of 3100020120 in words is "three billion, one hundred million, twenty thousand, one hundred twenty".