331116304549 has 2 divisors, whose sum is σ = 331116304550. Its totient is φ = 331116304548.

The previous prime is 331116304529. The next prime is 331116304567. The reversal of 331116304549 is 945403611133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247488340324 + 83627964225 = 497482^2 + 289185^2 .

It is a cyclic number.

It is not a de Polignac number, because 331116304549 - 2⁵ = 331116304517 is a prime.

It is a super-2 number, since 2×331116304549² (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 (331116304529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165558152274 + 165558152275.

It is an arithmetic number, because the mean of its divisors is an integer number (165558152275).

Almost surely, 2^331116304549 is an apocalyptic number.

It is an amenable number.

331116304549 is a deficient number, since it is larger than the sum of its proper divisors (1).

331116304549 is an equidigital number, since it uses as much as digits as its factorization.

331116304549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 331116304549 in words is "three hundred thirty-one billion, one hundred sixteen million, three hundred four thousand, five hundred forty-nine".