21232131203 has 2 divisors, whose sum is σ = 21232131204. Its totient is φ = 21232131202.

The previous prime is 21232131187. The next prime is 21232131209. The reversal of 21232131203 is 30213123212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21232131203 - 2⁴ = 21232131187 is a prime.

It is not a weakly prime, because it can be changed into another prime (21232131209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616065601 + 10616065602.

It is an arithmetic number, because the mean of its divisors is an integer number (10616065602).

Almost surely, 2^21232131203 is an apocalyptic number.

21232131203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232131203 is an equidigital number, since it uses as much as digits as its factorization.

21232131203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21232131203 its reverse (30213123212), we get a palindrome (51445254415).

The spelling of 21232131203 in words is "twenty-one billion, two hundred thirty-two million, one hundred thirty-one thousand, two hundred three".