21341031412403 has 4 divisors (see below), whose sum is σ = 21341417961480. Its totient is φ = 21340644863328.

The previous prime is 21341031412399. The next prime is 21341031412423. The reversal of 21341031412403 is 30421413014312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21341031412403 - 2² = 21341031412399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21341031412423) 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, 193191713 + ... + 193302146.

It is an arithmetic number, because the mean of its divisors is an integer number (5335354490370).

Almost surely, 2^{21341031412403} is an apocalyptic number.

21341031412403 is a deficient number, since it is larger than the sum of its proper divisors (386549077).

21341031412403 is an equidigital number, since it uses as much as digits as its factorization.

21341031412403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386549076.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21341031412403 its reverse (30421413014312), we get a palindrome (51762444426715).

The spelling of 21341031412403 in words is "twenty-one trillion, three hundred forty-one billion, thirty-one million, four hundred twelve thousand, four hundred three".