31302232023133 has 2 divisors, whose sum is σ = 31302232023134. Its totient is φ = 31302232023132.

The previous prime is 31302232023121. The next prime is 31302232023197. The reversal of 31302232023133 is 33132023220313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18637758219609 + 12664473803524 = 4317147^2 + 3558718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31302232023133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31302232023103) 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, 15651116011566 + 15651116011567.

It is an arithmetic number, because the mean of its divisors is an integer number (15651116011567).

Almost surely, 2^{31302232023133} is an apocalyptic number.

It is an amenable number.

31302232023133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302232023133 is an equidigital number, since it uses as much as digits as its factorization.

31302232023133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31302232023133 its reverse (33132023220313), we get a palindrome (64434255243446).

The spelling of 31302232023133 in words is "thirty-one trillion, three hundred two billion, two hundred thirty-two million, twenty-three thousand, one hundred thirty-three".