2021232423 has 16 divisors (see below), whose sum is σ = 3080950016. Its totient is φ = 1154623680.

The previous prime is 2021232413. The next prime is 2021232431. The reversal of 2021232423 is 3242321202.

It is not a de Polignac number, because 2021232423 - 2⁸ = 2021232167 is a prime.

It is a super-3 number, since 3×2021232423³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021232423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021232403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61515 + ... + 88467.

It is an arithmetic number, because the mean of its divisors is an integer number (192559376).

Almost surely, 2^2021232423 is an apocalyptic number.

2021232423 is a deficient number, since it is larger than the sum of its proper divisors (1059717593).

2021232423 is a wasteful number, since it uses less digits than its factorization.

2021232423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30534.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2021232423 is about 44958.1185438181. The cubic root of 2021232423 is about 1264.3638941783.

Adding to 2021232423 its reverse (3242321202), we get a palindrome (5263553625).

The spelling of 2021232423 in words is "two billion, twenty-one million, two hundred thirty-two thousand, four hundred twenty-three".