2931318328919 has 2 divisors, whose sum is σ = 2931318328920. Its totient is φ = 2931318328918.

The previous prime is 2931318328891. The next prime is 2931318328943. The reversal of 2931318328919 is 9198238131392.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2931318328919 is a prime.

It is a super-2 number, since 2×2931318328919² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2931318328949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1465659164459 + 1465659164460.

It is an arithmetic number, because the mean of its divisors is an integer number (1465659164460).

Almost surely, 2^{2931318328919} is an apocalyptic number.

2931318328919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2931318328919 is an equidigital number, since it uses as much as digits as its factorization.

2931318328919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 59.

The spelling of 2931318328919 in words is "two trillion, nine hundred thirty-one billion, three hundred eighteen million, three hundred twenty-eight thousand, nine hundred nineteen".