3120312020 has 48 divisors (see below), whose sum is σ = 7814354688. Its totient is φ = 1023306240.

The previous prime is 3120312017. The next prime is 3120312023. The reversal of 3120312020 is 202130213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3120312017) and next prime (3120312023).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 3120311986 and 3120312004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120312023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481301 + ... + 487740.

It is an arithmetic number, because the mean of its divisors is an integer number (162799056).

Almost surely, 2^3120312020 is an apocalyptic number.

It is an amenable number.

3120312020 is an abundant number, since it is smaller than the sum of its proper divisors (4694042668).

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

3120312020 is a wasteful number, since it uses less digits than its factorization.

3120312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969080 (or 969078 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3120312020 is about 55859.7531322866. The cubic root of 3120312020 is about 1461.2774239350.

Adding to 3120312020 its reverse (202130213), we get a palindrome (3322442233).

The spelling of 3120312020 in words is "three billion, one hundred twenty million, three hundred twelve thousand, twenty".