2321625321 has 20 divisors (see below), whose sum is σ = 3473838852. Its totient is φ = 1545192288.

The previous prime is 2321625311. The next prime is 2321625353. The reversal of 2321625321 is 1235261232.

It is a happy number.

2321625321 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 625 + 32 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 895505625 + 1426119696 = 29925^2 + 37764^2 .

It is not a de Polignac number, because 2321625321 - 2¹⁰ = 2321624297 is a prime.

It is a super-2 number, since 2×2321625321² = 10779888262216706082, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2321625311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26275 + ... + 73031.

Almost surely, 2^2321625321 is an apocalyptic number.

It is an amenable number.

2321625321 is a deficient number, since it is larger than the sum of its proper divisors (1152213531).

2321625321 is an equidigital number, since it uses as much as digits as its factorization.

2321625321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47382 (or 47373 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2321625321 is about 48183.2473065069. The cubic root of 2321625321 is about 1324.1302603120.

Adding to 2321625321 its reverse (1235261232), we get a palindrome (3556886553).

The spelling of 2321625321 in words is "two billion, three hundred twenty-one million, six hundred twenty-five thousand, three hundred twenty-one".