31421022012011 has 2 divisors, whose sum is σ = 31421022012012. Its totient is φ = 31421022012010.

The previous prime is 31421022011993. The next prime is 31421022012043. The reversal of 31421022012011 is 11021022012413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31421022012011 - 2³⁰ = 31419948270187 is a prime.

It is not a weakly prime, because it can be changed into another prime (31421022012311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15710511006005 + 15710511006006.

It is an arithmetic number, because the mean of its divisors is an integer number (15710511006006).

Almost surely, 2^{31421022012011} is an apocalyptic number.

31421022012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31421022012011 is an equidigital number, since it uses as much as digits as its factorization.

31421022012011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 31421022012011 its reverse (11021022012413), we get a palindrome (42442044024424).

The spelling of 31421022012011 in words is "thirty-one trillion, four hundred twenty-one billion, twenty-two million, twelve thousand, eleven".