3123101220 has 24 divisors (see below), whose sum is σ = 8744683584. Its totient is φ = 832826976.

The previous prime is 3123101197. The next prime is 3123101249. The reversal of 3123101220 is 221013213.

3123101220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3123101220² = 19507522460730976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3123101220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26025784 + ... + 26025903.

It is an arithmetic number, because the mean of its divisors is an integer number (364361816).

Almost surely, 2^3123101220 is an apocalyptic number.

3123101220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3123101220 is an abundant number, since it is smaller than the sum of its proper divisors (5621582364).

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

3123101220 is a wasteful number, since it uses less digits than its factorization.

3123101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52051699 (or 52051697 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3123101220 is about 55884.7136523039. The cubic root of 3123101220 is about 1461.7126989050.

Adding to 3123101220 its reverse (221013213), we get a palindrome (3344114433).

The spelling of 3123101220 in words is "three billion, one hundred twenty-three million, one hundred one thousand, two hundred twenty".