2312322021 has 24 divisors (see below), whose sum is σ = 3560336000. Its totient is φ = 1441919232.

The previous prime is 2312321903. The next prime is 2312322049. The reversal of 2312322021 is 1202232132.

2312322021 is a `hidden beast` number, since 231 + 232 + 202 + 1 = 666.

It is not a de Polignac number, because 2312322021 - 2¹⁸ = 2312059877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312321985 and 2312322003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312312021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72076 + ... + 99093.

Almost surely, 2^2312322021 is an apocalyptic number.

It is an amenable number.

2312322021 is a deficient number, since it is larger than the sum of its proper divisors (1248013979).

2312322021 is a wasteful number, since it uses less digits than its factorization.

2312322021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171273 (or 171270 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2312322021 is about 48086.6095810466. The cubic root of 2312322021 is about 1322.3591917962.

Adding to 2312322021 its reverse (1202232132), we get a palindrome (3514554153).

The spelling of 2312322021 in words is "two billion, three hundred twelve million, three hundred twenty-two thousand, twenty-one".