2021312504 has 8 divisors (see below), whose sum is σ = 3789960960. Its totient is φ = 1010656248.

The previous prime is 2021312483. The next prime is 2021312507. The reversal of 2021312504 is 4052131202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021312507) 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 as a sum of consecutive naturals, namely, 126332024 + ... + 126332039.

It is an arithmetic number, because the mean of its divisors is an integer number (473745120).

Almost surely, 2^2021312504 is an apocalyptic number.

It is an amenable number.

2021312504 is a deficient number, since it is larger than the sum of its proper divisors (1768648456).

2021312504 is a wasteful number, since it uses less digits than its factorization.

2021312504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252664069 (or 252664065 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2021312504 is about 44959.0091527827. The cubic root of 2021312504 is about 1264.3805919426.

Adding to 2021312504 its reverse (4052131202), we get a palindrome (6073443706).

The spelling of 2021312504 in words is "two billion, twenty-one million, three hundred twelve thousand, five hundred four".