3123272520 has 80 divisors (see below), whose sum is σ = 10497676860. Its totient is φ = 832871808.

The previous prime is 3123272513. The next prime is 3123272587. The reversal of 3123272520 is 252723213.

It is a happy number.

3123272520 is a `hidden beast` number, since 312 + 327 + 2 + 5 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2910170916 + 213101604 = 53946^2 + 14598^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 478747 + ... + 485226.

Almost surely, 2^3123272520 is an apocalyptic number.

3123272520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3123272520 is an abundant number, since it is smaller than the sum of its proper divisors (7374404340).

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

3123272520 is a wasteful number, since it uses less digits than its factorization.

3123272520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963996 (or 963983 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3123272520 is about 55886.2462507548. The cubic root of 3123272520 is about 1461.7394230690.

Adding to 3123272520 its reverse (252723213), we get a palindrome (3375995733).

The spelling of 3123272520 in words is "three billion, one hundred twenty-three million, two hundred seventy-two thousand, five hundred twenty".