31322021141 has 2 divisors, whose sum is σ = 31322021142. Its totient is φ = 31322021140.

The previous prime is 31322021119. The next prime is 31322021197. The reversal of 31322021141 is 14112022313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15893897041 + 15428124100 = 126071^2 + 124210^2 .

It is a cyclic number.

It is not a de Polignac number, because 31322021141 - 2⁶ = 31322021077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31382021141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15661010570 + 15661010571.

It is an arithmetic number, because the mean of its divisors is an integer number (15661010571).

Almost surely, 2^31322021141 is an apocalyptic number.

It is an amenable number.

31322021141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31322021141 is an equidigital number, since it uses as much as digits as its factorization.

31322021141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31322021141 its reverse (14112022313), we get a palindrome (45434043454).

The spelling of 31322021141 in words is "thirty-one billion, three hundred twenty-two million, twenty-one thousand, one hundred forty-one".