331019999969 has 2 divisors, whose sum is σ = 331019999970. Its totient is φ = 331019999968.

The previous prime is 331019999927. The next prime is 331020000061. The reversal of 331019999969 is 969999910133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318321640000 + 12698359969 = 564200^2 + 112687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331019999969 is a prime.

It is a super-2 number, since 2×331019999969² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331019999899 and 331019999908.

It is not a weakly prime, because it can be changed into another prime (331019999909) 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, 165509999984 + 165509999985.

It is an arithmetic number, because the mean of its divisors is an integer number (165509999985).

Almost surely, 2^331019999969 is an apocalyptic number.

It is an amenable number.

331019999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

331019999969 is an equidigital number, since it uses as much as digits as its factorization.

331019999969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28697814, while the sum is 68.

The spelling of 331019999969 in words is "three hundred thirty-one billion, nineteen million, nine hundred ninety-nine thousand, nine hundred sixty-nine".