31334020010021 has 2 divisors, whose sum is σ = 31334020010022. Its totient is φ = 31334020010020.

The previous prime is 31334020010011. The next prime is 31334020010057. The reversal of 31334020010021 is 12001002043313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31333685522500 + 334487521 = 5597650^2 + 18289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31334020010021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31334020009975 and 31334020010002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31334020010011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15667010005010 + 15667010005011.

It is an arithmetic number, because the mean of its divisors is an integer number (15667010005011).

Almost surely, 2^{31334020010021} is an apocalyptic number.

It is an amenable number.

31334020010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

31334020010021 is an equidigital number, since it uses as much as digits as its factorization.

31334020010021 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 31334020010021 its reverse (12001002043313), we get a palindrome (43335022053334).

The spelling of 31334020010021 in words is "thirty-one trillion, three hundred thirty-four billion, twenty million, ten thousand, twenty-one".