20231421413 has 4 divisors (see below), whose sum is σ = 23121624480. Its totient is φ = 17341218348.

The previous prime is 20231421383. The next prime is 20231421451. The reversal of 20231421413 is 31412413202.

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 20231421413 - 2⁸ = 20231421157 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 (20231421113) 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, 1445101523 + ... + 1445101536.

It is an arithmetic number, because the mean of its divisors is an integer number (5780406120).

Almost surely, 2^20231421413 is an apocalyptic number.

It is an amenable number.

20231421413 is a deficient number, since it is larger than the sum of its proper divisors (2890203067).

20231421413 is an equidigital number, since it uses as much as digits as its factorization.

20231421413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890203066.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20231421413 its reverse (31412413202), we get a palindrome (51643834615).

The spelling of 20231421413 in words is "twenty billion, two hundred thirty-one million, four hundred twenty-one thousand, four hundred thirteen".