21232342403 has 2 divisors, whose sum is σ = 21232342404. Its totient is φ = 21232342402.

The previous prime is 21232342381. The next prime is 21232342409. The reversal of 21232342403 is 30424323212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21232342403 - 2⁸ = 21232342147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21232342409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616171201 + 10616171202.

It is an arithmetic number, because the mean of its divisors is an integer number (10616171202).

Almost surely, 2^21232342403 is an apocalyptic number.

21232342403 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232342403 is an equidigital number, since it uses as much as digits as its factorization.

21232342403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21232342403 its reverse (30424323212), we get a palindrome (51656665615).

The spelling of 21232342403 in words is "twenty-one billion, two hundred thirty-two million, three hundred forty-two thousand, four hundred three".