21310313083 has 2 divisors, whose sum is σ = 21310313084. Its totient is φ = 21310313082.

The previous prime is 21310313069. The next prime is 21310313131. The reversal of 21310313083 is 38031301312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21310313083 - 2⁹ = 21310312571 is a prime.

It is not a weakly prime, because it can be changed into another prime (21310313023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655156541 + 10655156542.

It is an arithmetic number, because the mean of its divisors is an integer number (10655156542).

Almost surely, 2^21310313083 is an apocalyptic number.

21310313083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21310313083 is an equidigital number, since it uses as much as digits as its factorization.

21310313083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21310313083 its reverse (38031301312), we get a palindrome (59341614395).

The spelling of 21310313083 in words is "twenty-one billion, three hundred ten million, three hundred thirteen thousand, eighty-three".