31421026061 has 2 divisors, whose sum is σ = 31421026062. Its totient is φ = 31421026060.

The previous prime is 31421026051. The next prime is 31421026079. The reversal of 31421026061 is 16062012413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28180001161 + 3241024900 = 167869^2 + 56930^2 .

It is a cyclic number.

It is not a de Polignac number, because 31421026061 - 2¹⁴ = 31421009677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31421026061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31421026051) 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, 15710513030 + 15710513031.

It is an arithmetic number, because the mean of its divisors is an integer number (15710513031).

Almost surely, 2^31421026061 is an apocalyptic number.

It is an amenable number.

31421026061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31421026061 is an equidigital number, since it uses as much as digits as its factorization.

31421026061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 31421026061 its reverse (16062012413), we get a palindrome (47483038474).

The spelling of 31421026061 in words is "thirty-one billion, four hundred twenty-one million, twenty-six thousand, sixty-one".