2788228031 has 2 divisors, whose sum is σ = 2788228032. Its totient is φ = 2788228030.

The previous prime is 2788227971. The next prime is 2788228049. The reversal of 2788228031 is 1308228872.

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-2788228031 is a prime.

It is a super-2 number, since 2×2788228031² = 15548431105708273922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2788228031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2788228631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394114015 + 1394114016.

It is an arithmetic number, because the mean of its divisors is an integer number (1394114016).

Almost surely, 2^2788228031 is an apocalyptic number.

2788228031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2788228031 is an equidigital number, since it uses as much as digits as its factorization.

2788228031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 2788228031 is about 52803.6744081319. The cubic root of 2788228031 is about 1407.4817198046.

The spelling of 2788228031 in words is "two billion, seven hundred eighty-eight million, two hundred twenty-eight thousand, thirty-one".