31300320002021 has 16 divisors (see below), whose sum is σ = 36305666780544. Its totient is φ = 26429330156544.

The previous prime is 31300320001987. The next prime is 31300320002033. The reversal of 31300320002021 is 12020002300313.

It is not a de Polignac number, because 31300320002021 - 2¹⁰ = 31300320000997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300320002821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36610700 + ... + 37455893.

It is an arithmetic number, because the mean of its divisors is an integer number (2269104173784).

Almost surely, 2^{31300320002021} is an apocalyptic number.

It is an amenable number.

31300320002021 is a deficient number, since it is larger than the sum of its proper divisors (5005346778523).

31300320002021 is an equidigital number, since it uses as much as digits as its factorization.

31300320002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74067500.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31300320002021 its reverse (12020002300313), we get a palindrome (43320322302334).

The spelling of 31300320002021 in words is "thirty-one trillion, three hundred billion, three hundred twenty million, two thousand, twenty-one".