2021401231423 has 8 divisors (see below), whose sum is σ = 2310207547392. Its totient is φ = 1732603593336.

The previous prime is 2021401231391. The next prime is 2021401231469. The reversal of 2021401231423 is 3241321041202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2021401231423 - 2⁵ = 2021401231391 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 (2021401231483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1662415 + ... + 2608912.

It is an arithmetic number, because the mean of its divisors is an integer number (288775943424).

Almost surely, 2^{2021401231423} is an apocalyptic number.

2021401231423 is a deficient number, since it is larger than the sum of its proper divisors (288806315969).

2021401231423 is an equidigital number, since it uses as much as digits as its factorization.

2021401231423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338941.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2021401231423 its reverse (3241321041202), we get a palindrome (5262722272625).

The spelling of 2021401231423 in words is "two trillion, twenty-one billion, four hundred one million, two hundred thirty-one thousand, four hundred twenty-three".