331883746477 has 2 divisors, whose sum is σ = 331883746478. Its totient is φ = 331883746476.

The previous prime is 331883746463. The next prime is 331883746487. The reversal of 331883746477 is 774647388133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262163456361 + 69720290116 = 512019^2 + 264046^2 .

It is an emirp because it is prime and its reverse (774647388133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331883746477 - 2²⁷ = 331749528749 is a prime.

It is a super-2 number, since 2×331883746477² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331883746427) 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, 165941873238 + 165941873239.

It is an arithmetic number, because the mean of its divisors is an integer number (165941873239).

Almost surely, 2^331883746477 is an apocalyptic number.

It is an amenable number.

331883746477 is a deficient number, since it is larger than the sum of its proper divisors (1).

331883746477 is an equidigital number, since it uses as much as digits as its factorization.

331883746477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56899584, while the sum is 61.

The spelling of 331883746477 in words is "three hundred thirty-one billion, eight hundred eighty-three million, seven hundred forty-six thousand, four hundred seventy-seven".