2780864347031 has 2 divisors, whose sum is σ = 2780864347032. Its totient is φ = 2780864347030.

The previous prime is 2780864347021. The next prime is 2780864347039. The reversal of 2780864347031 is 1307434680872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2780864347031 is a prime.

It is a super-3 number, since 3×2780864347031³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2780864347039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390432173515 + 1390432173516.

It is an arithmetic number, because the mean of its divisors is an integer number (1390432173516).

Almost surely, 2^{2780864347031} is an apocalyptic number.

2780864347031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780864347031 is an equidigital number, since it uses as much as digits as its factorization.

2780864347031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 2780864347031 in words is "two trillion, seven hundred eighty billion, eight hundred sixty-four million, three hundred forty-seven thousand, thirty-one".