2312132021 has 4 divisors (see below), whose sum is σ = 2433823200. Its totient is φ = 2190440844.

The previous prime is 2312131999. The next prime is 2312132047. The reversal of 2312132021 is 1202312132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2312132021 - 2¹⁸ = 2311869877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312132321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60845561 + ... + 60845598.

It is an arithmetic number, because the mean of its divisors is an integer number (608455800).

Almost surely, 2^2312132021 is an apocalyptic number.

It is an amenable number.

2312132021 is a deficient number, since it is larger than the sum of its proper divisors (121691179).

2312132021 is a wasteful number, since it uses less digits than its factorization.

2312132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121691178.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2312132021 is about 48084.6339385047. The cubic root of 2312132021 is about 1322.3229720531.

Adding to 2312132021 its reverse (1202312132), we get a palindrome (3514444153).

The spelling of 2312132021 in words is "two billion, three hundred twelve million, one hundred thirty-two thousand, twenty-one".