2931987349 has 2 divisors, whose sum is σ = 2931987350. Its totient is φ = 2931987348.

The previous prime is 2931987343. The next prime is 2931987407. The reversal of 2931987349 is 9437891392.

2931987349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2830984849 + 101002500 = 53207^2 + 10050^2 .

It is a cyclic number.

It is not a de Polignac number, because 2931987349 - 2³ = 2931987341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2931987349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2931987341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1465993674 + 1465993675.

It is an arithmetic number, because the mean of its divisors is an integer number (1465993675).

Almost surely, 2^2931987349 is an apocalyptic number.

It is an amenable number.

2931987349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2931987349 is an equidigital number, since it uses as much as digits as its factorization.

2931987349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 2931987349 is about 54147.8286637608. The cubic root of 2931987349 is about 1431.2671294226.

The spelling of 2931987349 in words is "two billion, nine hundred thirty-one million, nine hundred eighty-seven thousand, three hundred forty-nine".