31331322033061 has 2 divisors, whose sum is σ = 31331322033062. Its totient is φ = 31331322033060.

The previous prime is 31331322032981. The next prime is 31331322033103. The reversal of 31331322033061 is 16033022313313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20690717177025 + 10640604856036 = 4548705^2 + 3261994^2 .

It is a cyclic number.

It is not a de Polignac number, because 31331322033061 - 2¹¹ = 31331322031013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31331322043061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15665661016530 + 15665661016531.

It is an arithmetic number, because the mean of its divisors is an integer number (15665661016531).

Almost surely, 2^{31331322033061} is an apocalyptic number.

It is an amenable number.

31331322033061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31331322033061 is an equidigital number, since it uses as much as digits as its factorization.

31331322033061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 31331322033061 its reverse (16033022313313), we get a palindrome (47364344346374).

The spelling of 31331322033061 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred twenty-two million, thirty-three thousand, sixty-one".